diff options
Diffstat (limited to 'usr.sbin')
| -rw-r--r-- | usr.sbin/pmcstat/Makefile | 2 | ||||
| -rw-r--r-- | usr.sbin/pmcstat/pmcpl_callgraph.c | 8 | ||||
| -rw-r--r-- | usr.sbin/pmcstat/pmcpl_callgraph.h | 2 | ||||
| -rw-r--r-- | usr.sbin/pmcstat/pmcpl_calltree.c | 8 | ||||
| -rw-r--r-- | usr.sbin/pmcstat/pmcpl_calltree.h | 2 | ||||
| -rw-r--r-- | usr.sbin/pmcstat/pmcpl_gprof.c | 5 | ||||
| -rw-r--r-- | usr.sbin/pmcstat/pmcstat.c | 162 | ||||
| -rw-r--r-- | usr.sbin/pmcstat/pmcstat.h | 107 | ||||
| -rw-r--r-- | usr.sbin/pmcstat/pmcstat_log.c | 1511 | ||||
| -rw-r--r-- | usr.sbin/pmcstat/pmcstat_log.h | 143 |
10 files changed, 51 insertions, 1899 deletions
diff --git a/usr.sbin/pmcstat/Makefile b/usr.sbin/pmcstat/Makefile index dc5a30a40003..8790c1df1c96 100644 --- a/usr.sbin/pmcstat/Makefile +++ b/usr.sbin/pmcstat/Makefile @@ -5,7 +5,7 @@ PROG= pmcstat MAN= pmcstat.8 -LIBADD= elf kvm pmc m ncursesw +LIBADD= elf kvm pmc m ncursesw pmcstat SRCS= pmcstat.c pmcstat.h pmcstat_log.c \ pmcpl_callgraph.c pmcpl_gprof.c pmcpl_annotate.c \ diff --git a/usr.sbin/pmcstat/pmcpl_callgraph.c b/usr.sbin/pmcstat/pmcpl_callgraph.c index 33998b51baac..b461388e928e 100644 --- a/usr.sbin/pmcstat/pmcpl_callgraph.c +++ b/usr.sbin/pmcstat/pmcpl_callgraph.c @@ -73,6 +73,9 @@ __FBSDID("$FreeBSD$"); #include "pmcstat_top.h" #include "pmcpl_callgraph.h" +#define min(A,B) ((A) < (B) ? (A) : (B)) +#define max(A,B) ((A) > (B) ? (A) : (B)) + /* Get the sample value in percent related to nsamples. */ #define PMCPL_CG_COUNTP(a) \ ((a)->pcg_count * 100.0 / nsamples) @@ -638,8 +641,11 @@ pmcpl_cg_topdisplay(void) */ int -pmcpl_cg_topkeypress(int c, WINDOW *w) +pmcpl_cg_topkeypress(int c, void *arg) { + WINDOW *w; + + w = (WINDOW *)arg; (void) c; (void) w; diff --git a/usr.sbin/pmcstat/pmcpl_callgraph.h b/usr.sbin/pmcstat/pmcpl_callgraph.h index aaf0e1ba1d69..d67359b64981 100644 --- a/usr.sbin/pmcstat/pmcpl_callgraph.h +++ b/usr.sbin/pmcstat/pmcpl_callgraph.h @@ -60,7 +60,7 @@ void pmcpl_cg_shutdown(FILE *mf); void pmcpl_cg_process( struct pmcstat_process *pp, struct pmcstat_pmcrecord *pmcr, uint32_t nsamples, uintfptr_t *cc, int usermode, uint32_t cpu); -int pmcpl_cg_topkeypress(int c, WINDOW *w); +int pmcpl_cg_topkeypress(int c, void *w); void pmcpl_cg_topdisplay(void); void pmcpl_cg_configure(char *opt); diff --git a/usr.sbin/pmcstat/pmcpl_calltree.c b/usr.sbin/pmcstat/pmcpl_calltree.c index 0f95ac172668..be03f3e8bc00 100644 --- a/usr.sbin/pmcstat/pmcpl_calltree.c +++ b/usr.sbin/pmcstat/pmcpl_calltree.c @@ -58,6 +58,9 @@ __FBSDID("$FreeBSD$"); #include "pmcstat_top.h" #include "pmcpl_calltree.h" +#define min(A,B) ((A) < (B) ? (A) : (B)) +#define max(A,B) ((A) > (B) ? (A) : (B)) + #define PMCPL_CT_GROWSIZE 4 static int pmcstat_skiplink = 0; @@ -581,8 +584,11 @@ pmcpl_ct_topdisplay(void) */ int -pmcpl_ct_topkeypress(int c, WINDOW *w) +pmcpl_ct_topkeypress(int c, void *arg) { + WINDOW *w; + + w = (WINDOW *)arg; switch (c) { case 'f': diff --git a/usr.sbin/pmcstat/pmcpl_calltree.h b/usr.sbin/pmcstat/pmcpl_calltree.h index f54957f83f71..763a4ad75ce2 100644 --- a/usr.sbin/pmcstat/pmcpl_calltree.h +++ b/usr.sbin/pmcstat/pmcpl_calltree.h @@ -35,7 +35,7 @@ void pmcpl_ct_shutdown(FILE *mf); void pmcpl_ct_process( struct pmcstat_process *pp, struct pmcstat_pmcrecord *pmcr, uint32_t nsamples, uintfptr_t *cc, int usermode, uint32_t cpu); -int pmcpl_ct_topkeypress(int c, WINDOW *w); +int pmcpl_ct_topkeypress(int c, void *w); void pmcpl_ct_topdisplay(void); int pmcpl_ct_configure(char *opt); diff --git a/usr.sbin/pmcstat/pmcpl_gprof.c b/usr.sbin/pmcstat/pmcpl_gprof.c index acb339e96f51..fc80fbce8a17 100644 --- a/usr.sbin/pmcstat/pmcpl_gprof.c +++ b/usr.sbin/pmcstat/pmcpl_gprof.c @@ -76,6 +76,9 @@ __FBSDID("$FreeBSD$"); typedef uint64_t WIDEHISTCOUNTER; +#define min(A,B) ((A) < (B) ? (A) : (B)) +#define max(A,B) ((A) > (B) ? (A) : (B)) + #define WIDEHISTCOUNTER_MAX UINT64_MAX #define HISTCOUNTER_MAX USHRT_MAX #define WIDEHISTCOUNTER_GMONTYPE ((int) 64) @@ -436,7 +439,7 @@ pmcpl_gmon_process(struct pmcstat_process *pp, struct pmcstat_pmcrecord *pmcr, * this executable image, try determine its parameters. */ if (image->pi_type == PMCSTAT_IMAGE_UNKNOWN) - pmcstat_image_determine_type(image); + pmcstat_image_determine_type(image, &args); assert(image->pi_type != PMCSTAT_IMAGE_UNKNOWN); diff --git a/usr.sbin/pmcstat/pmcstat.c b/usr.sbin/pmcstat/pmcstat.c index b87444339600..853acc6dd11f 100644 --- a/usr.sbin/pmcstat/pmcstat.c +++ b/usr.sbin/pmcstat/pmcstat.c @@ -64,6 +64,8 @@ __FBSDID("$FreeBSD$"); #include <sysexits.h> #include <unistd.h> +#include <libpmcstat.h> + #include "pmcstat.h" /* @@ -114,38 +116,6 @@ static struct kinfo_proc *pmcstat_plist; struct pmcstat_args args; static void -pmcstat_clone_event_descriptor(struct pmcstat_ev *ev, const cpuset_t *cpumask) -{ - int cpu; - struct pmcstat_ev *ev_clone; - - for (cpu = 0; cpu < CPU_SETSIZE; cpu++) { - if (!CPU_ISSET(cpu, cpumask)) - continue; - - if ((ev_clone = malloc(sizeof(*ev_clone))) == NULL) - errx(EX_SOFTWARE, "ERROR: Out of memory"); - (void) memset(ev_clone, 0, sizeof(*ev_clone)); - - ev_clone->ev_count = ev->ev_count; - ev_clone->ev_cpu = cpu; - ev_clone->ev_cumulative = ev->ev_cumulative; - ev_clone->ev_flags = ev->ev_flags; - ev_clone->ev_mode = ev->ev_mode; - ev_clone->ev_name = strdup(ev->ev_name); - if (ev_clone->ev_name == NULL) - errx(EX_SOFTWARE, "ERROR: Out of memory"); - ev_clone->ev_pmcid = ev->ev_pmcid; - ev_clone->ev_saved = ev->ev_saved; - ev_clone->ev_spec = strdup(ev->ev_spec); - if (ev_clone->ev_spec == NULL) - errx(EX_SOFTWARE, "ERROR: Out of memory"); - - STAILQ_INSERT_TAIL(&args.pa_events, ev_clone, ev_next); - } -} - -static void pmcstat_get_cpumask(const char *cpuspec, cpuset_t *cpumask) { int cpu; @@ -168,32 +138,6 @@ pmcstat_get_cpumask(const char *cpuspec, cpuset_t *cpumask) } void -pmcstat_attach_pmcs(void) -{ - struct pmcstat_ev *ev; - struct pmcstat_target *pt; - int count; - - /* Attach all process PMCs to target processes. */ - count = 0; - STAILQ_FOREACH(ev, &args.pa_events, ev_next) { - if (PMC_IS_SYSTEM_MODE(ev->ev_mode)) - continue; - SLIST_FOREACH(pt, &args.pa_targets, pt_next) - if (pmc_attach(ev->ev_pmcid, pt->pt_pid) == 0) - count++; - else if (errno != ESRCH) - err(EX_OSERR, -"ERROR: cannot attach pmc \"%s\" to process %d", - ev->ev_name, (int)pt->pt_pid); - } - - if (count == 0) - errx(EX_DATAERR, "ERROR: No processes were attached to."); -} - - -void pmcstat_cleanup(void) { struct pmcstat_ev *ev; @@ -220,66 +164,7 @@ pmcstat_cleanup(void) args.pa_logparser = NULL; } - pmcstat_shutdown_logging(); -} - -void -pmcstat_create_process(void) -{ - char token; - pid_t pid; - struct kevent kev; - struct pmcstat_target *pt; - - if (socketpair(AF_UNIX, SOCK_STREAM, 0, pmcstat_sockpair) < 0) - err(EX_OSERR, "ERROR: cannot create socket pair"); - - switch (pid = fork()) { - case -1: - err(EX_OSERR, "ERROR: cannot fork"); - /*NOTREACHED*/ - - case 0: /* child */ - (void) close(pmcstat_sockpair[PARENTSOCKET]); - - /* Write a token to tell our parent we've started executing. */ - if (write(pmcstat_sockpair[CHILDSOCKET], "+", 1) != 1) - err(EX_OSERR, "ERROR (child): cannot write token"); - - /* Wait for our parent to signal us to start. */ - if (read(pmcstat_sockpair[CHILDSOCKET], &token, 1) < 0) - err(EX_OSERR, "ERROR (child): cannot read token"); - (void) close(pmcstat_sockpair[CHILDSOCKET]); - - /* exec() the program requested */ - execvp(*args.pa_argv, args.pa_argv); - /* and if that fails, notify the parent */ - kill(getppid(), SIGCHLD); - err(EX_OSERR, "ERROR: execvp \"%s\" failed", *args.pa_argv); - /*NOTREACHED*/ - - default: /* parent */ - (void) close(pmcstat_sockpair[CHILDSOCKET]); - break; - } - - /* Ask to be notified via a kevent when the target process exits. */ - EV_SET(&kev, pid, EVFILT_PROC, EV_ADD|EV_ONESHOT, NOTE_EXIT, 0, - NULL); - if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) - err(EX_OSERR, "ERROR: cannot monitor child process %d", pid); - - if ((pt = malloc(sizeof(*pt))) == NULL) - errx(EX_SOFTWARE, "ERROR: Out of memory."); - - pt->pt_pid = pid; - SLIST_INSERT_HEAD(&args.pa_targets, pt, pt_next); - - /* Wait for the child to signal that its ready to go. */ - if (read(pmcstat_sockpair[PARENTSOCKET], &token, 1) < 0) - err(EX_OSERR, "ERROR (parent): cannot read token"); - - return; + pmcstat_log_shutdown_logging(); } void @@ -377,7 +262,6 @@ pmcstat_start_pmcs(void) exit(EX_OSERR); } } - } void @@ -465,24 +349,6 @@ pmcstat_print_pmcs(void) return; } -/* - * Do process profiling - * - * If a pid was specified, attach each allocated PMC to the target - * process. Otherwise, fork a child and attach the PMCs to the child, - * and have the child exec() the target program. - */ - -void -pmcstat_start_process(void) -{ - /* Signal the child to proceed. */ - if (write(pmcstat_sockpair[PARENTSOCKET], "!", 1) != 1) - err(EX_OSERR, "ERROR (parent): write of token failed"); - - (void) close(pmcstat_sockpair[PARENTSOCKET]); -} - void pmcstat_show_usage(void) { @@ -772,7 +638,7 @@ main(int argc, char **argv) if (option == 's' || option == 'S') args.pa_flags |= FLAG_HAS_SYSTEM_PMCS; - ev->ev_spec = strdup(optarg); + ev->ev_spec = strdup(optarg); if (ev->ev_spec == NULL) errx(EX_SOFTWARE, "ERROR: Out of memory."); @@ -813,7 +679,7 @@ main(int argc, char **argv) if (option == 's' || option == 'S') { CPU_CLR(ev->ev_cpu, &cpumask); - pmcstat_clone_event_descriptor(ev, &cpumask); + pmcstat_clone_event_descriptor(ev, &cpumask, &args); CPU_SET(ev->ev_cpu, &cpumask); } @@ -1157,7 +1023,7 @@ main(int argc, char **argv) if ((args.pa_flags & FLAG_DO_ANALYSIS) == 0) args.pa_flags |= FLAG_DO_PRINT; - pmcstat_initialize_logging(); + pmcstat_log_initialize_logging(); rfd = pmcstat_open_log(args.pa_inputpath, PMCSTAT_OPEN_FOR_READ); if ((args.pa_logparser = pmclog_open(rfd)) == NULL) @@ -1333,7 +1199,7 @@ main(int argc, char **argv) /* attach PMCs to the target process, starting it if specified */ if (args.pa_flags & FLAG_HAS_COMMANDLINE) - pmcstat_create_process(); + pmcstat_create_process(pmcstat_sockpair, &args, pmcstat_kq); if (check_driver_stats && pmc_get_driver_stats(&ds_start) < 0) err(EX_OSERR, "ERROR: Cannot retrieve driver statistics"); @@ -1344,7 +1210,7 @@ main(int argc, char **argv) errx(EX_DATAERR, "ERROR: No matching target processes."); if (args.pa_flags & FLAG_HAS_PROCESS_PMCS) - pmcstat_attach_pmcs(); + pmcstat_attach_pmcs(&args); if (pmcstat_kvm) { kvm_close(pmcstat_kvm); @@ -1357,10 +1223,10 @@ main(int argc, char **argv) /* start the (commandline) process if needed */ if (args.pa_flags & FLAG_HAS_COMMANDLINE) - pmcstat_start_process(); + pmcstat_start_process(pmcstat_sockpair); /* initialize logging */ - pmcstat_initialize_logging(); + pmcstat_log_initialize_logging(); /* Handle SIGINT using the kqueue loop */ sa.sa_handler = SIG_IGN; @@ -1424,7 +1290,7 @@ main(int argc, char **argv) switch (kev.filter) { case EVFILT_PROC: /* target has exited */ - runstate = pmcstat_close_log(); + runstate = pmcstat_close_log(&args); do_print = 1; break; @@ -1432,7 +1298,7 @@ main(int argc, char **argv) if (kev.ident == (unsigned)fileno(stdin) && (args.pa_flags & FLAG_DO_TOP)) { if (pmcstat_keypress_log()) - runstate = pmcstat_close_log(); + runstate = pmcstat_close_log(&args); } else { do_read = 0; runstate = pmcstat_process_log(); @@ -1455,13 +1321,13 @@ main(int argc, char **argv) * of its targets, or if logfile * writes encounter an error. */ - runstate = pmcstat_close_log(); + runstate = pmcstat_close_log(&args); do_print = 1; /* print PMCs at exit */ } else if (kev.ident == SIGINT) { /* Kill the child process if we started it */ if (args.pa_flags & FLAG_HAS_COMMANDLINE) pmcstat_kill_process(); - runstate = pmcstat_close_log(); + runstate = pmcstat_close_log(&args); } else if (kev.ident == SIGWINCH) { if (ioctl(fileno(args.pa_printfile), TIOCGWINSZ, &ws) < 0) diff --git a/usr.sbin/pmcstat/pmcstat.h b/usr.sbin/pmcstat/pmcstat.h index 5b1d3d916792..d008f54e7de9 100644 --- a/usr.sbin/pmcstat/pmcstat.h +++ b/usr.sbin/pmcstat/pmcstat.h @@ -33,29 +33,7 @@ #ifndef _PMCSTAT_H_ #define _PMCSTAT_H_ -#include <sys/_cpuset.h> - -#define FLAG_HAS_TARGET 0x00000001 /* process target */ -#define FLAG_HAS_WAIT_INTERVAL 0x00000002 /* -w secs */ -#define FLAG_HAS_OUTPUT_LOGFILE 0x00000004 /* -O file or pipe */ -#define FLAG_HAS_COMMANDLINE 0x00000008 /* command */ -#define FLAG_HAS_SAMPLING_PMCS 0x00000010 /* -S or -P */ -#define FLAG_HAS_COUNTING_PMCS 0x00000020 /* -s or -p */ -#define FLAG_HAS_PROCESS_PMCS 0x00000040 /* -P or -p */ -#define FLAG_HAS_SYSTEM_PMCS 0x00000080 /* -S or -s */ -#define FLAG_HAS_PIPE 0x00000100 /* implicit log */ -#define FLAG_READ_LOGFILE 0x00000200 /* -R file */ -#define FLAG_DO_GPROF 0x00000400 /* -g */ -#define FLAG_HAS_SAMPLESDIR 0x00000800 /* -D dir */ -#define FLAG_HAS_KERNELPATH 0x00001000 /* -k kernel */ -#define FLAG_DO_PRINT 0x00002000 /* -o */ -#define FLAG_DO_CALLGRAPHS 0x00004000 /* -G or -F */ -#define FLAG_DO_ANNOTATE 0x00008000 /* -m */ -#define FLAG_DO_TOP 0x00010000 /* -T */ -#define FLAG_DO_ANALYSIS 0x00020000 /* -g or -G or -m or -T */ -#define FLAGS_HAS_CPUMASK 0x00040000 /* -c */ -#define FLAG_HAS_DURATION 0x00080000 /* -l secs */ -#define FLAG_DO_WIDE_GPROF_HC 0x00100000 /* -e */ +#include <libpmcstat.h> #define DEFAULT_SAMPLE_COUNT 65536 #define DEFAULT_WAIT_INTERVAL 5.0 @@ -65,20 +43,9 @@ #define DEFAULT_CALLGRAPH_DEPTH 16 #define PRINT_HEADER_PREFIX "# " -#define READPIPEFD 0 -#define WRITEPIPEFD 1 -#define NPIPEFD 2 - -#define NSOCKPAIRFD 2 -#define PARENTSOCKET 0 -#define CHILDSOCKET 1 -#define PMCSTAT_OPEN_FOR_READ 0 -#define PMCSTAT_OPEN_FOR_WRITE 1 #define PMCSTAT_DEFAULT_NW_HOST "localhost" #define PMCSTAT_DEFAULT_NW_PORT "9000" -#define PMCSTAT_NHASH 256 -#define PMCSTAT_HASH_MASK 0xFF #define PMCSTAT_LDD_COMMAND "/usr/bin/ldd" @@ -98,90 +65,26 @@ #define PMCSTAT_TOP_DELTA 0 #define PMCSTAT_TOP_ACCUM 1 -#define min(A,B) ((A) < (B) ? (A) : (B)) -#define max(A,B) ((A) > (B) ? (A) : (B)) - -enum pmcstat_state { - PMCSTAT_FINISHED = 0, - PMCSTAT_EXITING = 1, - PMCSTAT_RUNNING = 2 -}; - -struct pmcstat_ev { - STAILQ_ENTRY(pmcstat_ev) ev_next; - int ev_count; /* associated count if in sampling mode */ - uint32_t ev_cpu; /* cpus for this event */ - int ev_cumulative; /* show cumulative counts */ - int ev_flags; /* PMC_F_* */ - int ev_fieldskip; /* #leading spaces */ - int ev_fieldwidth; /* print width */ - enum pmc_mode ev_mode; /* desired mode */ - char *ev_name; /* (derived) event name */ - pmc_id_t ev_pmcid; /* allocated ID */ - pmc_value_t ev_saved; /* for incremental counts */ - char *ev_spec; /* event specification */ -}; - -struct pmcstat_target { - SLIST_ENTRY(pmcstat_target) pt_next; - pid_t pt_pid; -}; - -struct pmcstat_args { - int pa_flags; /* argument flags */ - int pa_required; /* required features */ - int pa_pplugin; /* pre-processing plugin */ - int pa_plugin; /* analysis plugin */ - int pa_verbosity; /* verbosity level */ - FILE *pa_printfile; /* where to send printed output */ - int pa_logfd; /* output log file */ - char *pa_inputpath; /* path to input log */ - char *pa_outputpath; /* path to output log */ - void *pa_logparser; /* log file parser */ - const char *pa_fsroot; /* FS root where executables reside */ - char *pa_kernel; /* pathname of the kernel */ - const char *pa_samplesdir; /* directory for profile files */ - const char *pa_mapfilename;/* mapfile name */ - FILE *pa_graphfile; /* where to send the callgraph */ - int pa_graphdepth; /* print depth for callgraphs */ - double pa_interval; /* printing interval in seconds */ - cpuset_t pa_cpumask; /* filter for CPUs analysed */ - int pa_ctdumpinstr; /* dump instructions with calltree */ - int pa_topmode; /* delta or accumulative */ - int pa_toptty; /* output to tty or file */ - int pa_topcolor; /* terminal support color */ - int pa_mergepmc; /* merge PMC with same name */ - double pa_duration; /* time duration */ - int pa_argc; - char **pa_argv; - STAILQ_HEAD(, pmcstat_ev) pa_events; - SLIST_HEAD(, pmcstat_target) pa_targets; -}; - extern int pmcstat_displayheight; /* current terminal height */ extern int pmcstat_displaywidth; /* current terminal width */ extern struct pmcstat_args args; /* command line args */ /* Function prototypes */ -void pmcstat_attach_pmcs(void); void pmcstat_cleanup(void); -int pmcstat_close_log(void); -void pmcstat_create_process(void); void pmcstat_find_targets(const char *_arg); -void pmcstat_initialize_logging(void); void pmcstat_kill_process(void); -int pmcstat_open_log(const char *_p, int _mode); void pmcstat_print_counters(void); void pmcstat_print_headers(void); void pmcstat_print_pmcs(void); void pmcstat_show_usage(void); -void pmcstat_shutdown_logging(void); void pmcstat_start_pmcs(void); -void pmcstat_start_process(void); int pmcstat_process_log(void); int pmcstat_keypress_log(void); void pmcstat_display_log(void); void pmcstat_pluginconfigure_log(char *_opt); -void pmcstat_topexit(void); +void pmcstat_topexit(void); + +void pmcstat_log_shutdown_logging(void); +void pmcstat_log_initialize_logging(void); #endif /* _PMCSTAT_H_ */ diff --git a/usr.sbin/pmcstat/pmcstat_log.c b/usr.sbin/pmcstat/pmcstat_log.c index aaca29220c12..5efad1bf0374 100644 --- a/usr.sbin/pmcstat/pmcstat_log.c +++ b/usr.sbin/pmcstat/pmcstat_log.c @@ -73,8 +73,6 @@ __FBSDID("$FreeBSD$"); #include "pmcstat_log.h" #include "pmcstat_top.h" -#define PMCSTAT_ALLOCATE 1 - /* * PUBLIC INTERFACES * @@ -152,36 +150,7 @@ struct pmcstat_process *pmcstat_kernproc; /* kernel 'process' */ #include "pmcpl_annotate_cg.h" #include "pmcpl_calltree.h" -static struct pmc_plugins { - const char *pl_name; /* name */ - - /* configure */ - int (*pl_configure)(char *opt); - - /* init and shutdown */ - int (*pl_init)(void); - void (*pl_shutdown)(FILE *mf); - - /* sample processing */ - void (*pl_process)(struct pmcstat_process *pp, - struct pmcstat_pmcrecord *pmcr, uint32_t nsamples, - uintfptr_t *cc, int usermode, uint32_t cpu); - - /* image */ - void (*pl_initimage)(struct pmcstat_image *pi); - void (*pl_shutdownimage)(struct pmcstat_image *pi); - - /* pmc */ - void (*pl_newpmc)(pmcstat_interned_string ps, - struct pmcstat_pmcrecord *pr); - - /* top display */ - void (*pl_topdisplay)(void); - - /* top keypress */ - int (*pl_topkeypress)(int c, WINDOW *w); - -} plugins[] = { +static struct pmc_plugins plugins[] = { { .pl_name = "none", }, @@ -233,47 +202,9 @@ float pmcstat_threshold = 0.5; /* Cost filter for top mode. */ * Prototypes */ -static struct pmcstat_image *pmcstat_image_from_path(pmcstat_interned_string - _path, int _iskernelmodule); -static void pmcstat_image_get_aout_params(struct pmcstat_image *_image); -static void pmcstat_image_get_elf_params(struct pmcstat_image *_image); -static void pmcstat_image_link(struct pmcstat_process *_pp, - struct pmcstat_image *_i, uintfptr_t _lpc); - -static void pmcstat_pmcid_add(pmc_id_t _pmcid, - pmcstat_interned_string _name); - -static void pmcstat_process_aout_exec(struct pmcstat_process *_pp, - struct pmcstat_image *_image, uintfptr_t _entryaddr); -static void pmcstat_process_elf_exec(struct pmcstat_process *_pp, - struct pmcstat_image *_image, uintfptr_t _entryaddr); -static void pmcstat_process_exec(struct pmcstat_process *_pp, - pmcstat_interned_string _path, uintfptr_t _entryaddr); -static struct pmcstat_process *pmcstat_process_lookup(pid_t _pid, - int _allocate); -static int pmcstat_string_compute_hash(const char *_string); -static void pmcstat_string_initialize(void); -static int pmcstat_string_lookup_hash(pmcstat_interned_string _is); -static void pmcstat_string_shutdown(void); static void pmcstat_stats_reset(int _reset_global); /* - * A simple implementation of interned strings. Each interned string - * is assigned a unique address, so that subsequent string compares - * can be done by a simple pointer comparison instead of using - * strcmp(). This speeds up hash table lookups and saves memory if - * duplicate strings are the norm. - */ -struct pmcstat_string { - LIST_ENTRY(pmcstat_string) ps_next; /* hash link */ - int ps_len; - int ps_hash; - char *ps_string; -}; - -static LIST_HEAD(,pmcstat_string) pmcstat_string_hash[PMCSTAT_NHASH]; - -/* * PMC count. */ int pmcstat_npmcs; @@ -301,663 +232,6 @@ pmcstat_stats_reset(int reset_global) } /* - * Compute a 'hash' value for a string. - */ - -static int -pmcstat_string_compute_hash(const char *s) -{ - unsigned hash; - - for (hash = 2166136261; *s; s++) - hash = (hash ^ *s) * 16777619; - - return (hash & PMCSTAT_HASH_MASK); -} - -/* - * Intern a copy of string 's', and return a pointer to the - * interned structure. - */ - -pmcstat_interned_string -pmcstat_string_intern(const char *s) -{ - struct pmcstat_string *ps; - const struct pmcstat_string *cps; - int hash, len; - - if ((cps = pmcstat_string_lookup(s)) != NULL) - return (cps); - - hash = pmcstat_string_compute_hash(s); - len = strlen(s); - - if ((ps = malloc(sizeof(*ps))) == NULL) - err(EX_OSERR, "ERROR: Could not intern string"); - ps->ps_len = len; - ps->ps_hash = hash; - ps->ps_string = strdup(s); - LIST_INSERT_HEAD(&pmcstat_string_hash[hash], ps, ps_next); - return ((pmcstat_interned_string) ps); -} - -const char * -pmcstat_string_unintern(pmcstat_interned_string str) -{ - const char *s; - - s = ((const struct pmcstat_string *) str)->ps_string; - return (s); -} - -pmcstat_interned_string -pmcstat_string_lookup(const char *s) -{ - struct pmcstat_string *ps; - int hash, len; - - hash = pmcstat_string_compute_hash(s); - len = strlen(s); - - LIST_FOREACH(ps, &pmcstat_string_hash[hash], ps_next) - if (ps->ps_len == len && ps->ps_hash == hash && - strcmp(ps->ps_string, s) == 0) - return (ps); - return (NULL); -} - -static int -pmcstat_string_lookup_hash(pmcstat_interned_string s) -{ - const struct pmcstat_string *ps; - - ps = (const struct pmcstat_string *) s; - return (ps->ps_hash); -} - -/* - * Initialize the string interning facility. - */ - -static void -pmcstat_string_initialize(void) -{ - int i; - - for (i = 0; i < PMCSTAT_NHASH; i++) - LIST_INIT(&pmcstat_string_hash[i]); -} - -/* - * Destroy the string table, free'ing up space. - */ - -static void -pmcstat_string_shutdown(void) -{ - int i; - struct pmcstat_string *ps, *pstmp; - - for (i = 0; i < PMCSTAT_NHASH; i++) - LIST_FOREACH_SAFE(ps, &pmcstat_string_hash[i], ps_next, - pstmp) { - LIST_REMOVE(ps, ps_next); - free(ps->ps_string); - free(ps); - } -} - -/* - * Determine whether a given executable image is an A.OUT object, and - * if so, fill in its parameters from the text file. - * Sets image->pi_type. - */ - -static void -pmcstat_image_get_aout_params(struct pmcstat_image *image) -{ - int fd; - ssize_t nbytes; - struct exec ex; - const char *path; - char buffer[PATH_MAX]; - - path = pmcstat_string_unintern(image->pi_execpath); - assert(path != NULL); - - if (image->pi_iskernelmodule) - errx(EX_SOFTWARE, - "ERROR: a.out kernel modules are unsupported \"%s\"", path); - - (void) snprintf(buffer, sizeof(buffer), "%s%s", - args.pa_fsroot, path); - - if ((fd = open(buffer, O_RDONLY, 0)) < 0 || - (nbytes = read(fd, &ex, sizeof(ex))) < 0) { - if (args.pa_verbosity >= 2) - warn("WARNING: Cannot determine type of \"%s\"", - path); - image->pi_type = PMCSTAT_IMAGE_INDETERMINABLE; - if (fd != -1) - (void) close(fd); - return; - } - - (void) close(fd); - - if ((unsigned) nbytes != sizeof(ex) || - N_BADMAG(ex)) - return; - - image->pi_type = PMCSTAT_IMAGE_AOUT; - - /* TODO: the rest of a.out processing */ - - return; -} - -/* - * Helper function. - */ - -static int -pmcstat_symbol_compare(const void *a, const void *b) -{ - const struct pmcstat_symbol *sym1, *sym2; - - sym1 = (const struct pmcstat_symbol *) a; - sym2 = (const struct pmcstat_symbol *) b; - - if (sym1->ps_end <= sym2->ps_start) - return (-1); - if (sym1->ps_start >= sym2->ps_end) - return (1); - return (0); -} - -/* - * Map an address to a symbol in an image. - */ - -struct pmcstat_symbol * -pmcstat_symbol_search(struct pmcstat_image *image, uintfptr_t addr) -{ - struct pmcstat_symbol sym; - - if (image->pi_symbols == NULL) - return (NULL); - - sym.ps_name = NULL; - sym.ps_start = addr; - sym.ps_end = addr + 1; - - return (bsearch((void *) &sym, image->pi_symbols, - image->pi_symcount, sizeof(struct pmcstat_symbol), - pmcstat_symbol_compare)); -} - -/* - * Add the list of symbols in the given section to the list associated - * with the object. - */ -static void -pmcstat_image_add_symbols(struct pmcstat_image *image, Elf *e, - Elf_Scn *scn, GElf_Shdr *sh) -{ - int firsttime; - size_t n, newsyms, nshsyms, nfuncsyms; - struct pmcstat_symbol *symptr; - char *fnname; - GElf_Sym sym; - Elf_Data *data; - - if ((data = elf_getdata(scn, NULL)) == NULL) - return; - - /* - * Determine the number of functions named in this - * section. - */ - - nshsyms = sh->sh_size / sh->sh_entsize; - for (n = nfuncsyms = 0; n < nshsyms; n++) { - if (gelf_getsym(data, (int) n, &sym) != &sym) - return; - if (GELF_ST_TYPE(sym.st_info) == STT_FUNC) - nfuncsyms++; - } - - if (nfuncsyms == 0) - return; - - /* - * Allocate space for the new entries. - */ - firsttime = image->pi_symbols == NULL; - symptr = reallocarray(image->pi_symbols, - image->pi_symcount + nfuncsyms, sizeof(*symptr)); - if (symptr == image->pi_symbols) /* realloc() failed. */ - return; - image->pi_symbols = symptr; - - /* - * Append new symbols to the end of the current table. - */ - symptr += image->pi_symcount; - - for (n = newsyms = 0; n < nshsyms; n++) { - if (gelf_getsym(data, (int) n, &sym) != &sym) - return; - if (GELF_ST_TYPE(sym.st_info) != STT_FUNC) - continue; - if (sym.st_shndx == STN_UNDEF) - continue; - - if (!firsttime && pmcstat_symbol_search(image, sym.st_value)) - continue; /* We've seen this symbol already. */ - - if ((fnname = elf_strptr(e, sh->sh_link, sym.st_name)) - == NULL) - continue; -#ifdef __arm__ - /* Remove spurious ARM function name. */ - if (fnname[0] == '$' && - (fnname[1] == 'a' || fnname[1] == 't' || - fnname[1] == 'd') && - fnname[2] == '\0') - continue; -#endif - - symptr->ps_name = pmcstat_string_intern(fnname); - symptr->ps_start = sym.st_value - image->pi_vaddr; - symptr->ps_end = symptr->ps_start + sym.st_size; - symptr++; - - newsyms++; - } - - image->pi_symcount += newsyms; - if (image->pi_symcount == 0) - return; - - assert(newsyms <= nfuncsyms); - - /* - * Return space to the system if there were duplicates. - */ - if (newsyms < nfuncsyms) - image->pi_symbols = reallocarray(image->pi_symbols, - image->pi_symcount, sizeof(*symptr)); - - /* - * Keep the list of symbols sorted. - */ - qsort(image->pi_symbols, image->pi_symcount, sizeof(*symptr), - pmcstat_symbol_compare); - - /* - * Deal with function symbols that have a size of 'zero' by - * making them extend to the next higher address. These - * symbols are usually defined in assembly code. - */ - for (symptr = image->pi_symbols; - symptr < image->pi_symbols + (image->pi_symcount - 1); - symptr++) - if (symptr->ps_start == symptr->ps_end) - symptr->ps_end = (symptr+1)->ps_start; -} - -/* - * Examine an ELF file to determine the size of its text segment. - * Sets image->pi_type if anything conclusive can be determined about - * this image. - */ - -static void -pmcstat_image_get_elf_params(struct pmcstat_image *image) -{ - int fd; - size_t i, nph, nsh; - const char *path, *elfbase; - char *p, *endp; - uintfptr_t minva, maxva; - Elf *e; - Elf_Scn *scn; - GElf_Ehdr eh; - GElf_Phdr ph; - GElf_Shdr sh; - enum pmcstat_image_type image_type; - char buffer[PATH_MAX]; - - assert(image->pi_type == PMCSTAT_IMAGE_UNKNOWN); - - image->pi_start = minva = ~(uintfptr_t) 0; - image->pi_end = maxva = (uintfptr_t) 0; - image->pi_type = image_type = PMCSTAT_IMAGE_INDETERMINABLE; - image->pi_isdynamic = 0; - image->pi_dynlinkerpath = NULL; - image->pi_vaddr = 0; - - path = pmcstat_string_unintern(image->pi_execpath); - assert(path != NULL); - - /* - * Look for kernel modules under FSROOT/KERNELPATH/NAME, - * and user mode executable objects under FSROOT/PATHNAME. - */ - if (image->pi_iskernelmodule) - (void) snprintf(buffer, sizeof(buffer), "%s%s/%s", - args.pa_fsroot, args.pa_kernel, path); - else - (void) snprintf(buffer, sizeof(buffer), "%s%s", - args.pa_fsroot, path); - - e = NULL; - if ((fd = open(buffer, O_RDONLY, 0)) < 0 || - (e = elf_begin(fd, ELF_C_READ, NULL)) == NULL || - (elf_kind(e) != ELF_K_ELF)) { - if (args.pa_verbosity >= 2) - warnx("WARNING: Cannot determine the type of \"%s\".", - buffer); - goto done; - } - - if (gelf_getehdr(e, &eh) != &eh) { - warnx( - "WARNING: Cannot retrieve the ELF Header for \"%s\": %s.", - buffer, elf_errmsg(-1)); - goto done; - } - - if (eh.e_type != ET_EXEC && eh.e_type != ET_DYN && - !(image->pi_iskernelmodule && eh.e_type == ET_REL)) { - warnx("WARNING: \"%s\" is of an unsupported ELF type.", - buffer); - goto done; - } - - image_type = eh.e_ident[EI_CLASS] == ELFCLASS32 ? - PMCSTAT_IMAGE_ELF32 : PMCSTAT_IMAGE_ELF64; - - /* - * Determine the virtual address where an executable would be - * loaded. Additionally, for dynamically linked executables, - * save the pathname to the runtime linker. - */ - if (eh.e_type == ET_EXEC) { - if (elf_getphnum(e, &nph) == 0) { - warnx( -"WARNING: Could not determine the number of program headers in \"%s\": %s.", - buffer, - elf_errmsg(-1)); - goto done; - } - for (i = 0; i < eh.e_phnum; i++) { - if (gelf_getphdr(e, i, &ph) != &ph) { - warnx( -"WARNING: Retrieval of PHDR entry #%ju in \"%s\" failed: %s.", - (uintmax_t) i, buffer, elf_errmsg(-1)); - goto done; - } - switch (ph.p_type) { - case PT_DYNAMIC: - image->pi_isdynamic = 1; - break; - case PT_INTERP: - if ((elfbase = elf_rawfile(e, NULL)) == NULL) { - warnx( -"WARNING: Cannot retrieve the interpreter for \"%s\": %s.", - buffer, elf_errmsg(-1)); - goto done; - } - image->pi_dynlinkerpath = - pmcstat_string_intern(elfbase + - ph.p_offset); - break; - case PT_LOAD: - if ((ph.p_flags & PF_X) != 0 && - (ph.p_offset & (-ph.p_align)) == 0) - image->pi_vaddr = ph.p_vaddr & (-ph.p_align); - break; - } - } - } - - /* - * Get the min and max VA associated with this ELF object. - */ - if (elf_getshnum(e, &nsh) == 0) { - warnx( -"WARNING: Could not determine the number of sections for \"%s\": %s.", - buffer, elf_errmsg(-1)); - goto done; - } - - for (i = 0; i < nsh; i++) { - if ((scn = elf_getscn(e, i)) == NULL || - gelf_getshdr(scn, &sh) != &sh) { - warnx( -"WARNING: Could not retrieve section header #%ju in \"%s\": %s.", - (uintmax_t) i, buffer, elf_errmsg(-1)); - goto done; - } - if (sh.sh_flags & SHF_EXECINSTR) { - minva = min(minva, sh.sh_addr); - maxva = max(maxva, sh.sh_addr + sh.sh_size); - } - if (sh.sh_type == SHT_SYMTAB || sh.sh_type == SHT_DYNSYM) - pmcstat_image_add_symbols(image, e, scn, &sh); - } - - image->pi_start = minva; - image->pi_end = maxva; - image->pi_type = image_type; - image->pi_fullpath = pmcstat_string_intern(buffer); - - /* Build display name - */ - endp = buffer; - for (p = buffer; *p; p++) - if (*p == '/') - endp = p+1; - image->pi_name = pmcstat_string_intern(endp); - - done: - (void) elf_end(e); - if (fd >= 0) - (void) close(fd); - return; -} - -/* - * Given an image descriptor, determine whether it is an ELF, or AOUT. - * If no handler claims the image, set its type to 'INDETERMINABLE'. - */ - -void -pmcstat_image_determine_type(struct pmcstat_image *image) -{ - assert(image->pi_type == PMCSTAT_IMAGE_UNKNOWN); - - /* Try each kind of handler in turn */ - if (image->pi_type == PMCSTAT_IMAGE_UNKNOWN) - pmcstat_image_get_elf_params(image); - if (image->pi_type == PMCSTAT_IMAGE_UNKNOWN) - pmcstat_image_get_aout_params(image); - - /* - * Otherwise, remember that we tried to determine - * the object's type and had failed. - */ - if (image->pi_type == PMCSTAT_IMAGE_UNKNOWN) - image->pi_type = PMCSTAT_IMAGE_INDETERMINABLE; -} - -/* - * Locate an image descriptor given an interned path, adding a fresh - * descriptor to the cache if necessary. This function also finds a - * suitable name for this image's sample file. - * - * We defer filling in the file format specific parts of the image - * structure till the time we actually see a sample that would fall - * into this image. - */ - -static struct pmcstat_image * -pmcstat_image_from_path(pmcstat_interned_string internedpath, - int iskernelmodule) -{ - int hash; - struct pmcstat_image *pi; - - hash = pmcstat_string_lookup_hash(internedpath); - - /* First, look for an existing entry. */ - LIST_FOREACH(pi, &pmcstat_image_hash[hash], pi_next) - if (pi->pi_execpath == internedpath && - pi->pi_iskernelmodule == iskernelmodule) - return (pi); - - /* - * Allocate a new entry and place it at the head of the hash - * and LRU lists. - */ - pi = malloc(sizeof(*pi)); - if (pi == NULL) - return (NULL); - - pi->pi_type = PMCSTAT_IMAGE_UNKNOWN; - pi->pi_execpath = internedpath; - pi->pi_start = ~0; - pi->pi_end = 0; - pi->pi_entry = 0; - pi->pi_vaddr = 0; - pi->pi_isdynamic = 0; - pi->pi_iskernelmodule = iskernelmodule; - pi->pi_dynlinkerpath = NULL; - pi->pi_symbols = NULL; - pi->pi_symcount = 0; - pi->pi_addr2line = NULL; - - if (plugins[args.pa_pplugin].pl_initimage != NULL) - plugins[args.pa_pplugin].pl_initimage(pi); - if (plugins[args.pa_plugin].pl_initimage != NULL) - plugins[args.pa_plugin].pl_initimage(pi); - - LIST_INSERT_HEAD(&pmcstat_image_hash[hash], pi, pi_next); - - return (pi); -} - -/* - * Record the fact that PC values from 'start' to 'end' come from - * image 'image'. - */ - -static void -pmcstat_image_link(struct pmcstat_process *pp, struct pmcstat_image *image, - uintfptr_t start) -{ - struct pmcstat_pcmap *pcm, *pcmnew; - uintfptr_t offset; - - assert(image->pi_type != PMCSTAT_IMAGE_UNKNOWN && - image->pi_type != PMCSTAT_IMAGE_INDETERMINABLE); - - if ((pcmnew = malloc(sizeof(*pcmnew))) == NULL) - err(EX_OSERR, "ERROR: Cannot create a map entry"); - - /* - * Adjust the map entry to only cover the text portion - * of the object. - */ - - offset = start - image->pi_vaddr; - pcmnew->ppm_lowpc = image->pi_start + offset; - pcmnew->ppm_highpc = image->pi_end + offset; - pcmnew->ppm_image = image; - - assert(pcmnew->ppm_lowpc < pcmnew->ppm_highpc); - - /* Overlapped mmap()'s are assumed to never occur. */ - TAILQ_FOREACH(pcm, &pp->pp_map, ppm_next) - if (pcm->ppm_lowpc >= pcmnew->ppm_highpc) - break; - - if (pcm == NULL) - TAILQ_INSERT_TAIL(&pp->pp_map, pcmnew, ppm_next); - else - TAILQ_INSERT_BEFORE(pcm, pcmnew, ppm_next); -} - -/* - * Unmap images in the range [start..end) associated with process - * 'pp'. - */ - -static void -pmcstat_image_unmap(struct pmcstat_process *pp, uintfptr_t start, - uintfptr_t end) -{ - struct pmcstat_pcmap *pcm, *pcmtmp, *pcmnew; - - assert(pp != NULL); - assert(start < end); - - /* - * Cases: - * - we could have the range completely in the middle of an - * existing pcmap; in this case we have to split the pcmap - * structure into two (i.e., generate a 'hole'). - * - we could have the range covering multiple pcmaps; these - * will have to be removed. - * - we could have either 'start' or 'end' falling in the - * middle of a pcmap; in this case shorten the entry. - */ - TAILQ_FOREACH_SAFE(pcm, &pp->pp_map, ppm_next, pcmtmp) { - assert(pcm->ppm_lowpc < pcm->ppm_highpc); - if (pcm->ppm_highpc <= start) - continue; - if (pcm->ppm_lowpc >= end) - return; - if (pcm->ppm_lowpc >= start && pcm->ppm_highpc <= end) { - /* - * The current pcmap is completely inside the - * unmapped range: remove it entirely. - */ - TAILQ_REMOVE(&pp->pp_map, pcm, ppm_next); - free(pcm); - } else if (pcm->ppm_lowpc < start && pcm->ppm_highpc > end) { - /* - * Split this pcmap into two; curtail the - * current map to end at [start-1], and start - * the new one at [end]. - */ - if ((pcmnew = malloc(sizeof(*pcmnew))) == NULL) - err(EX_OSERR, - "ERROR: Cannot split a map entry"); - - pcmnew->ppm_image = pcm->ppm_image; - - pcmnew->ppm_lowpc = end; - pcmnew->ppm_highpc = pcm->ppm_highpc; - - pcm->ppm_highpc = start; - - TAILQ_INSERT_AFTER(&pp->pp_map, pcm, pcmnew, ppm_next); - - return; - } else if (pcm->ppm_lowpc < start && pcm->ppm_highpc <= end) - pcm->ppm_highpc = start; - else if (pcm->ppm_lowpc >= start && pcm->ppm_highpc > end) - pcm->ppm_lowpc = end; - else - assert(0); - } -} - -/* * Resolve file name and line number for the given address. */ int @@ -1047,46 +321,6 @@ pmcstat_image_addr2line(struct pmcstat_image *image, uintfptr_t addr, } /* - * Add a {pmcid,name} mapping. - */ - -static void -pmcstat_pmcid_add(pmc_id_t pmcid, pmcstat_interned_string ps) -{ - struct pmcstat_pmcrecord *pr, *prm; - - /* Replace an existing name for the PMC. */ - prm = NULL; - LIST_FOREACH(pr, &pmcstat_pmcs, pr_next) - if (pr->pr_pmcid == pmcid) { - pr->pr_pmcname = ps; - return; - } else if (pr->pr_pmcname == ps) - prm = pr; - - /* - * Otherwise, allocate a new descriptor and call the - * plugins hook. - */ - if ((pr = malloc(sizeof(*pr))) == NULL) - err(EX_OSERR, "ERROR: Cannot allocate pmc record"); - - pr->pr_pmcid = pmcid; - pr->pr_pmcname = ps; - pr->pr_pmcin = pmcstat_npmcs++; - pr->pr_samples = 0; - pr->pr_dubious_frames = 0; - pr->pr_merge = prm == NULL ? pr : prm; - - LIST_INSERT_HEAD(&pmcstat_pmcs, pr, pr_next); - - if (plugins[args.pa_pplugin].pl_newpmc != NULL) - plugins[args.pa_pplugin].pl_newpmc(ps, pr); - if (plugins[args.pa_plugin].pl_newpmc != NULL) - plugins[args.pa_plugin].pl_newpmc(ps, pr); -} - -/* * Given a pmcid in use, find its human-readable name. */ @@ -1135,486 +369,6 @@ pmcstat_pmcindex_to_pmcr(int pmcin) } /* - * Get PMC record by id, apply merge policy. - */ - -static struct pmcstat_pmcrecord * -pmcstat_lookup_pmcid(pmc_id_t pmcid) -{ - struct pmcstat_pmcrecord *pr; - - LIST_FOREACH(pr, &pmcstat_pmcs, pr_next) { - if (pr->pr_pmcid == pmcid) { - if (pmcstat_mergepmc) - return pr->pr_merge; - return pr; - } - } - - return NULL; -} - -/* - * Associate an AOUT image with a process. - */ - -static void -pmcstat_process_aout_exec(struct pmcstat_process *pp, - struct pmcstat_image *image, uintfptr_t entryaddr) -{ - (void) pp; - (void) image; - (void) entryaddr; - /* TODO Implement a.out handling */ -} - -/* - * Associate an ELF image with a process. - */ - -static void -pmcstat_process_elf_exec(struct pmcstat_process *pp, - struct pmcstat_image *image, uintfptr_t entryaddr) -{ - uintmax_t libstart; - struct pmcstat_image *rtldimage; - - assert(image->pi_type == PMCSTAT_IMAGE_ELF32 || - image->pi_type == PMCSTAT_IMAGE_ELF64); - - /* Create a map entry for the base executable. */ - pmcstat_image_link(pp, image, image->pi_vaddr); - - /* - * For dynamically linked executables we need to determine - * where the dynamic linker was mapped to for this process, - * Subsequent executable objects that are mapped in by the - * dynamic linker will be tracked by log events of type - * PMCLOG_TYPE_MAP_IN. - */ - - if (image->pi_isdynamic) { - - /* - * The runtime loader gets loaded just after the maximum - * possible heap address. Like so: - * - * [ TEXT DATA BSS HEAP -->*RTLD SHLIBS <--STACK] - * ^ ^ - * 0 VM_MAXUSER_ADDRESS - - * - * The exact address where the loader gets mapped in - * will vary according to the size of the executable - * and the limits on the size of the process'es data - * segment at the time of exec(). The entry address - * recorded at process exec time corresponds to the - * 'start' address inside the dynamic linker. From - * this we can figure out the address where the - * runtime loader's file object had been mapped to. - */ - rtldimage = pmcstat_image_from_path(image->pi_dynlinkerpath, 0); - if (rtldimage == NULL) { - warnx("WARNING: Cannot find image for \"%s\".", - pmcstat_string_unintern(image->pi_dynlinkerpath)); - pmcstat_stats.ps_exec_errors++; - return; - } - - if (rtldimage->pi_type == PMCSTAT_IMAGE_UNKNOWN) - pmcstat_image_get_elf_params(rtldimage); - - if (rtldimage->pi_type != PMCSTAT_IMAGE_ELF32 && - rtldimage->pi_type != PMCSTAT_IMAGE_ELF64) { - warnx("WARNING: rtld not an ELF object \"%s\".", - pmcstat_string_unintern(image->pi_dynlinkerpath)); - return; - } - - libstart = entryaddr - rtldimage->pi_entry; - pmcstat_image_link(pp, rtldimage, libstart); - } -} - -/* - * Find the process descriptor corresponding to a PID. If 'allocate' - * is zero, we return a NULL if a pid descriptor could not be found or - * a process descriptor process. If 'allocate' is non-zero, then we - * will attempt to allocate a fresh process descriptor. Zombie - * process descriptors are only removed if a fresh allocation for the - * same PID is requested. - */ - -static struct pmcstat_process * -pmcstat_process_lookup(pid_t pid, int allocate) -{ - uint32_t hash; - struct pmcstat_pcmap *ppm, *ppmtmp; - struct pmcstat_process *pp, *pptmp; - - hash = (uint32_t) pid & PMCSTAT_HASH_MASK; /* simplicity wins */ - - LIST_FOREACH_SAFE(pp, &pmcstat_process_hash[hash], pp_next, pptmp) - if (pp->pp_pid == pid) { - /* Found a descriptor, check and process zombies */ - if (allocate && pp->pp_isactive == 0) { - /* remove maps */ - TAILQ_FOREACH_SAFE(ppm, &pp->pp_map, ppm_next, - ppmtmp) { - TAILQ_REMOVE(&pp->pp_map, ppm, - ppm_next); - free(ppm); - } - /* remove process entry */ - LIST_REMOVE(pp, pp_next); - free(pp); - break; - } - return (pp); - } - - if (!allocate) - return (NULL); - - if ((pp = malloc(sizeof(*pp))) == NULL) - err(EX_OSERR, "ERROR: Cannot allocate pid descriptor"); - - pp->pp_pid = pid; - pp->pp_isactive = 1; - - TAILQ_INIT(&pp->pp_map); - - LIST_INSERT_HEAD(&pmcstat_process_hash[hash], pp, pp_next); - return (pp); -} - -/* - * Associate an image and a process. - */ - -static void -pmcstat_process_exec(struct pmcstat_process *pp, - pmcstat_interned_string path, uintfptr_t entryaddr) -{ - struct pmcstat_image *image; - - if ((image = pmcstat_image_from_path(path, 0)) == NULL) { - pmcstat_stats.ps_exec_errors++; - return; - } - - if (image->pi_type == PMCSTAT_IMAGE_UNKNOWN) - pmcstat_image_determine_type(image); - - assert(image->pi_type != PMCSTAT_IMAGE_UNKNOWN); - - switch (image->pi_type) { - case PMCSTAT_IMAGE_ELF32: - case PMCSTAT_IMAGE_ELF64: - pmcstat_stats.ps_exec_elf++; - pmcstat_process_elf_exec(pp, image, entryaddr); - break; - - case PMCSTAT_IMAGE_AOUT: - pmcstat_stats.ps_exec_aout++; - pmcstat_process_aout_exec(pp, image, entryaddr); - break; - - case PMCSTAT_IMAGE_INDETERMINABLE: - pmcstat_stats.ps_exec_indeterminable++; - break; - - default: - err(EX_SOFTWARE, - "ERROR: Unsupported executable type for \"%s\"", - pmcstat_string_unintern(path)); - } -} - - -/* - * Find the map entry associated with process 'p' at PC value 'pc'. - */ - -struct pmcstat_pcmap * -pmcstat_process_find_map(struct pmcstat_process *p, uintfptr_t pc) -{ - struct pmcstat_pcmap *ppm; - - TAILQ_FOREACH(ppm, &p->pp_map, ppm_next) { - if (pc >= ppm->ppm_lowpc && pc < ppm->ppm_highpc) - return (ppm); - if (pc < ppm->ppm_lowpc) - return (NULL); - } - - return (NULL); -} - -/* - * Convert a hwpmc(4) log to profile information. A system-wide - * callgraph is generated if FLAG_DO_CALLGRAPHS is set. gmon.out - * files usable by gprof(1) are created if FLAG_DO_GPROF is set. - */ -static int -pmcstat_analyze_log(void) -{ - uint32_t cpu, cpuflags; - uintfptr_t pc; - pid_t pid; - struct pmcstat_image *image; - struct pmcstat_process *pp, *ppnew; - struct pmcstat_pcmap *ppm, *ppmtmp; - struct pmclog_ev ev; - struct pmcstat_pmcrecord *pmcr; - pmcstat_interned_string image_path; - - assert(args.pa_flags & FLAG_DO_ANALYSIS); - - if (elf_version(EV_CURRENT) == EV_NONE) - err(EX_UNAVAILABLE, "Elf library initialization failed"); - - while (pmclog_read(args.pa_logparser, &ev) == 0) { - assert(ev.pl_state == PMCLOG_OK); - - switch (ev.pl_type) { - case PMCLOG_TYPE_INITIALIZE: - if ((ev.pl_u.pl_i.pl_version & 0xFF000000) != - PMC_VERSION_MAJOR << 24 && args.pa_verbosity > 0) - warnx( -"WARNING: Log version 0x%x does not match compiled version 0x%x.", - ev.pl_u.pl_i.pl_version, PMC_VERSION_MAJOR); - break; - - case PMCLOG_TYPE_MAP_IN: - /* - * Introduce an address range mapping for a - * userland process or the kernel (pid == -1). - * - * We always allocate a process descriptor so - * that subsequent samples seen for this - * address range are mapped to the current - * object being mapped in. - */ - pid = ev.pl_u.pl_mi.pl_pid; - if (pid == -1) - pp = pmcstat_kernproc; - else - pp = pmcstat_process_lookup(pid, - PMCSTAT_ALLOCATE); - - assert(pp != NULL); - - image_path = pmcstat_string_intern(ev.pl_u.pl_mi. - pl_pathname); - image = pmcstat_image_from_path(image_path, pid == -1); - if (image->pi_type == PMCSTAT_IMAGE_UNKNOWN) - pmcstat_image_determine_type(image); - if (image->pi_type != PMCSTAT_IMAGE_INDETERMINABLE) - pmcstat_image_link(pp, image, - ev.pl_u.pl_mi.pl_start); - break; - - case PMCLOG_TYPE_MAP_OUT: - /* - * Remove an address map. - */ - pid = ev.pl_u.pl_mo.pl_pid; - if (pid == -1) - pp = pmcstat_kernproc; - else - pp = pmcstat_process_lookup(pid, 0); - - if (pp == NULL) /* unknown process */ - break; - - pmcstat_image_unmap(pp, ev.pl_u.pl_mo.pl_start, - ev.pl_u.pl_mo.pl_end); - break; - - case PMCLOG_TYPE_PCSAMPLE: - /* - * Note: the `PCSAMPLE' log entry is not - * generated by hpwmc(4) after version 2. - */ - - /* - * We bring in the gmon file for the image - * currently associated with the PMC & pid - * pair and increment the appropriate entry - * bin inside this. - */ - pmcstat_stats.ps_samples_total++; - ps_samples_period++; - - pc = ev.pl_u.pl_s.pl_pc; - pp = pmcstat_process_lookup(ev.pl_u.pl_s.pl_pid, - PMCSTAT_ALLOCATE); - - /* Get PMC record. */ - pmcr = pmcstat_lookup_pmcid(ev.pl_u.pl_s.pl_pmcid); - assert(pmcr != NULL); - pmcr->pr_samples++; - - /* - * Call the plugins processing - * TODO: move pmcstat_process_find_map inside plugins - */ - - if (plugins[args.pa_pplugin].pl_process != NULL) - plugins[args.pa_pplugin].pl_process( - pp, pmcr, 1, &pc, - pmcstat_process_find_map(pp, pc) != NULL, 0); - plugins[args.pa_plugin].pl_process( - pp, pmcr, 1, &pc, - pmcstat_process_find_map(pp, pc) != NULL, 0); - break; - - case PMCLOG_TYPE_CALLCHAIN: - pmcstat_stats.ps_samples_total++; - ps_samples_period++; - - cpuflags = ev.pl_u.pl_cc.pl_cpuflags; - cpu = PMC_CALLCHAIN_CPUFLAGS_TO_CPU(cpuflags); - - /* Filter on the CPU id. */ - if (!CPU_ISSET(cpu, &(args.pa_cpumask))) { - pmcstat_stats.ps_samples_skipped++; - break; - } - - pp = pmcstat_process_lookup(ev.pl_u.pl_cc.pl_pid, - PMCSTAT_ALLOCATE); - - /* Get PMC record. */ - pmcr = pmcstat_lookup_pmcid(ev.pl_u.pl_cc.pl_pmcid); - assert(pmcr != NULL); - pmcr->pr_samples++; - - /* - * Call the plugins processing - */ - - if (plugins[args.pa_pplugin].pl_process != NULL) - plugins[args.pa_pplugin].pl_process( - pp, pmcr, - ev.pl_u.pl_cc.pl_npc, - ev.pl_u.pl_cc.pl_pc, - PMC_CALLCHAIN_CPUFLAGS_TO_USERMODE(cpuflags), - cpu); - plugins[args.pa_plugin].pl_process( - pp, pmcr, - ev.pl_u.pl_cc.pl_npc, - ev.pl_u.pl_cc.pl_pc, - PMC_CALLCHAIN_CPUFLAGS_TO_USERMODE(cpuflags), - cpu); - break; - - case PMCLOG_TYPE_PMCALLOCATE: - /* - * Record the association pmc id between this - * PMC and its name. - */ - pmcstat_pmcid_add(ev.pl_u.pl_a.pl_pmcid, - pmcstat_string_intern(ev.pl_u.pl_a.pl_evname)); - break; - - case PMCLOG_TYPE_PMCALLOCATEDYN: - /* - * Record the association pmc id between this - * PMC and its name. - */ - pmcstat_pmcid_add(ev.pl_u.pl_ad.pl_pmcid, - pmcstat_string_intern(ev.pl_u.pl_ad.pl_evname)); - break; - - case PMCLOG_TYPE_PROCEXEC: - - /* - * Change the executable image associated with - * a process. - */ - pp = pmcstat_process_lookup(ev.pl_u.pl_x.pl_pid, - PMCSTAT_ALLOCATE); - - /* delete the current process map */ - TAILQ_FOREACH_SAFE(ppm, &pp->pp_map, ppm_next, ppmtmp) { - TAILQ_REMOVE(&pp->pp_map, ppm, ppm_next); - free(ppm); - } - - /* - * Associate this process image. - */ - image_path = pmcstat_string_intern( - ev.pl_u.pl_x.pl_pathname); - assert(image_path != NULL); - pmcstat_process_exec(pp, image_path, - ev.pl_u.pl_x.pl_entryaddr); - break; - - case PMCLOG_TYPE_PROCEXIT: - - /* - * Due to the way the log is generated, the - * last few samples corresponding to a process - * may appear in the log after the process - * exit event is recorded. Thus we keep the - * process' descriptor and associated data - * structures around, but mark the process as - * having exited. - */ - pp = pmcstat_process_lookup(ev.pl_u.pl_e.pl_pid, 0); - if (pp == NULL) - break; - pp->pp_isactive = 0; /* mark as a zombie */ - break; - - case PMCLOG_TYPE_SYSEXIT: - pp = pmcstat_process_lookup(ev.pl_u.pl_se.pl_pid, 0); - if (pp == NULL) - break; - pp->pp_isactive = 0; /* make a zombie */ - break; - - case PMCLOG_TYPE_PROCFORK: - - /* - * Allocate a process descriptor for the new - * (child) process. - */ - ppnew = - pmcstat_process_lookup(ev.pl_u.pl_f.pl_newpid, - PMCSTAT_ALLOCATE); - - /* - * If we had been tracking the parent, clone - * its address maps. - */ - pp = pmcstat_process_lookup(ev.pl_u.pl_f.pl_oldpid, 0); - if (pp == NULL) - break; - TAILQ_FOREACH(ppm, &pp->pp_map, ppm_next) - pmcstat_image_link(ppnew, ppm->ppm_image, - ppm->ppm_lowpc); - break; - - default: /* other types of entries are not relevant */ - break; - } - } - - if (ev.pl_state == PMCLOG_EOF) - return (PMCSTAT_FINISHED); - else if (ev.pl_state == PMCLOG_REQUIRE_DATA) - return (PMCSTAT_RUNNING); - - err(EX_DATAERR, - "ERROR: event parsing failed (record %jd, offset 0x%jx)", - (uintmax_t) ev.pl_count + 1, ev.pl_offset); -} - -/* * Print log entries as text. */ @@ -1737,7 +491,7 @@ pmcstat_print_log(void) if (ev.pl_state == PMCLOG_EOF) return (PMCSTAT_FINISHED); - else if (ev.pl_state == PMCLOG_REQUIRE_DATA) + else if (ev.pl_state == PMCLOG_REQUIRE_DATA) return (PMCSTAT_RUNNING); errx(EX_DATAERR, @@ -1751,131 +505,6 @@ pmcstat_print_log(void) */ /* - * Close a logfile, after first flushing all in-module queued data. - */ - -int -pmcstat_close_log(void) -{ - /* If a local logfile is configured ask the kernel to stop - * and flush data. Kernel will close the file when data is flushed - * so keep the status to EXITING. - */ - if (args.pa_logfd != -1) { - if (pmc_close_logfile() < 0) - err(EX_OSERR, "ERROR: logging failed"); - } - - return (args.pa_flags & FLAG_HAS_PIPE ? PMCSTAT_EXITING : - PMCSTAT_FINISHED); -} - - - -/* - * Open a log file, for reading or writing. - * - * The function returns the fd of a successfully opened log or -1 in - * case of failure. - */ - -int -pmcstat_open_log(const char *path, int mode) -{ - int error, fd, cfd; - size_t hlen; - const char *p, *errstr; - struct addrinfo hints, *res, *res0; - char hostname[MAXHOSTNAMELEN]; - - errstr = NULL; - fd = -1; - - /* - * If 'path' is "-" then open one of stdin or stdout depending - * on the value of 'mode'. - * - * If 'path' contains a ':' and does not start with a '/' or '.', - * and is being opened for writing, treat it as a "host:port" - * specification and open a network socket. - * - * Otherwise, treat 'path' as a file name and open that. - */ - if (path[0] == '-' && path[1] == '\0') - fd = (mode == PMCSTAT_OPEN_FOR_READ) ? 0 : 1; - else if (path[0] != '/' && - path[0] != '.' && strchr(path, ':') != NULL) { - - p = strrchr(path, ':'); - hlen = p - path; - if (p == path || hlen >= sizeof(hostname)) { - errstr = strerror(EINVAL); - goto done; - } - - assert(hlen < sizeof(hostname)); - (void) strncpy(hostname, path, hlen); - hostname[hlen] = '\0'; - - (void) memset(&hints, 0, sizeof(hints)); - hints.ai_family = AF_UNSPEC; - hints.ai_socktype = SOCK_STREAM; - if ((error = getaddrinfo(hostname, p+1, &hints, &res0)) != 0) { - errstr = gai_strerror(error); - goto done; - } - - fd = -1; - for (res = res0; res; res = res->ai_next) { - if ((fd = socket(res->ai_family, res->ai_socktype, - res->ai_protocol)) < 0) { - errstr = strerror(errno); - continue; - } - if (mode == PMCSTAT_OPEN_FOR_READ) { - if (bind(fd, res->ai_addr, res->ai_addrlen) < 0) { - errstr = strerror(errno); - (void) close(fd); - fd = -1; - continue; - } - listen(fd, 1); - cfd = accept(fd, NULL, NULL); - (void) close(fd); - if (cfd < 0) { - errstr = strerror(errno); - fd = -1; - break; - } - fd = cfd; - } else { - if (connect(fd, res->ai_addr, res->ai_addrlen) < 0) { - errstr = strerror(errno); - (void) close(fd); - fd = -1; - continue; - } - } - errstr = NULL; - break; - } - freeaddrinfo(res0); - - } else if ((fd = open(path, mode == PMCSTAT_OPEN_FOR_READ ? - O_RDONLY : (O_WRONLY|O_CREAT|O_TRUNC), - S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)) < 0) - errstr = strerror(errno); - - done: - if (errstr) - errx(EX_OSERR, "ERROR: Cannot open \"%s\" for %s: %s.", path, - (mode == PMCSTAT_OPEN_FOR_READ ? "reading" : "writing"), - errstr); - - return (fd); -} - -/* * Process a log file in offline analysis mode. */ @@ -1890,7 +519,8 @@ pmcstat_process_log(void) if (args.pa_flags & FLAG_DO_PRINT) return (pmcstat_print_log()); else - return (pmcstat_analyze_log()); + return (pmcstat_analyze_log(&args, plugins, &pmcstat_stats, pmcstat_kernproc, + pmcstat_mergepmc, &pmcstat_npmcs, &ps_samples_period)); } /* @@ -2052,7 +682,7 @@ pmcstat_keypress_log(void) break; default: if (plugins[args.pa_plugin].pl_topkeypress != NULL) - if (plugins[args.pa_plugin].pl_topkeypress(c, w)) + if (plugins[args.pa_plugin].pl_topkeypress(c, (void *)w)) ret = 1; } @@ -2080,7 +710,6 @@ pmcstat_display_log(void) if (plugins[args.pa_plugin].pl_init != NULL) plugins[args.pa_plugin].pl_init(); } - } /* @@ -2102,137 +731,17 @@ pmcstat_pluginconfigure_log(char *opt) } } -/* - * Initialize module. - */ - void -pmcstat_initialize_logging(void) +pmcstat_log_shutdown_logging(void) { - int i; - - /* use a convenient format for 'ldd' output */ - if (setenv("LD_TRACE_LOADED_OBJECTS_FMT1","%o \"%p\" %x\n",1) != 0) - err(EX_OSERR, "ERROR: Cannot setenv"); - - /* Initialize hash tables */ - pmcstat_string_initialize(); - for (i = 0; i < PMCSTAT_NHASH; i++) { - LIST_INIT(&pmcstat_image_hash[i]); - LIST_INIT(&pmcstat_process_hash[i]); - } - - /* - * Create a fake 'process' entry for the kernel with pid -1. - * hwpmc(4) will subsequently inform us about where the kernel - * and any loaded kernel modules are mapped. - */ - if ((pmcstat_kernproc = pmcstat_process_lookup((pid_t) -1, - PMCSTAT_ALLOCATE)) == NULL) - err(EX_OSERR, "ERROR: Cannot initialize logging"); - /* PMC count. */ - pmcstat_npmcs = 0; - - /* Merge PMC with same name. */ - pmcstat_mergepmc = args.pa_mergepmc; - - /* - * Initialize plugins - */ - - if (plugins[args.pa_pplugin].pl_init != NULL) - plugins[args.pa_pplugin].pl_init(); - if (plugins[args.pa_plugin].pl_init != NULL) - plugins[args.pa_plugin].pl_init(); + pmcstat_shutdown_logging(&args, plugins, &pmcstat_stats); } -/* - * Shutdown module. - */ - void -pmcstat_shutdown_logging(void) +pmcstat_log_initialize_logging(void) { - int i; - FILE *mf; - struct pmcstat_image *pi, *pitmp; - struct pmcstat_process *pp, *pptmp; - struct pmcstat_pcmap *ppm, *ppmtmp; - - /* determine where to send the map file */ - mf = NULL; - if (args.pa_mapfilename != NULL) - mf = (strcmp(args.pa_mapfilename, "-") == 0) ? - args.pa_printfile : fopen(args.pa_mapfilename, "w"); - - if (mf == NULL && args.pa_flags & FLAG_DO_GPROF && - args.pa_verbosity >= 2) - mf = args.pa_printfile; - - if (mf) - (void) fprintf(mf, "MAP:\n"); - - /* - * Shutdown the plugins - */ - - if (plugins[args.pa_plugin].pl_shutdown != NULL) - plugins[args.pa_plugin].pl_shutdown(mf); - if (plugins[args.pa_pplugin].pl_shutdown != NULL) - plugins[args.pa_pplugin].pl_shutdown(mf); - - for (i = 0; i < PMCSTAT_NHASH; i++) { - LIST_FOREACH_SAFE(pi, &pmcstat_image_hash[i], pi_next, - pitmp) { - if (plugins[args.pa_plugin].pl_shutdownimage != NULL) - plugins[args.pa_plugin].pl_shutdownimage(pi); - if (plugins[args.pa_pplugin].pl_shutdownimage != NULL) - plugins[args.pa_pplugin].pl_shutdownimage(pi); - - free(pi->pi_symbols); - if (pi->pi_addr2line != NULL) - pclose(pi->pi_addr2line); - LIST_REMOVE(pi, pi_next); - free(pi); - } - - LIST_FOREACH_SAFE(pp, &pmcstat_process_hash[i], pp_next, - pptmp) { - TAILQ_FOREACH_SAFE(ppm, &pp->pp_map, ppm_next, ppmtmp) { - TAILQ_REMOVE(&pp->pp_map, ppm, ppm_next); - free(ppm); - } - LIST_REMOVE(pp, pp_next); - free(pp); - } - } - - pmcstat_string_shutdown(); - - /* - * Print errors unless -q was specified. Print all statistics - * if verbosity > 1. - */ -#define PRINT(N,V) do { \ - if (pmcstat_stats.ps_##V || args.pa_verbosity >= 2) \ - (void) fprintf(args.pa_printfile, " %-40s %d\n",\ - N, pmcstat_stats.ps_##V); \ - } while (0) - - if (args.pa_verbosity >= 1 && (args.pa_flags & FLAG_DO_ANALYSIS)) { - (void) fprintf(args.pa_printfile, "CONVERSION STATISTICS:\n"); - PRINT("#exec/a.out", exec_aout); - PRINT("#exec/elf", exec_elf); - PRINT("#exec/unknown", exec_indeterminable); - PRINT("#exec handling errors", exec_errors); - PRINT("#samples/total", samples_total); - PRINT("#samples/unclaimed", samples_unknown_offset); - PRINT("#samples/unknown-object", samples_indeterminable); - PRINT("#samples/unknown-function", samples_unknown_function); - PRINT("#callchain/dubious-frames", callchain_dubious_frames); - } - if (mf) - (void) fclose(mf); + pmcstat_initialize_logging(&pmcstat_kernproc, + &args, plugins, &pmcstat_npmcs, &pmcstat_mergepmc); } diff --git a/usr.sbin/pmcstat/pmcstat_log.h b/usr.sbin/pmcstat/pmcstat_log.h index 32a22f45063f..fc8d60964ed9 100644 --- a/usr.sbin/pmcstat/pmcstat_log.h +++ b/usr.sbin/pmcstat/pmcstat_log.h @@ -34,142 +34,10 @@ #ifndef _PMCSTAT_LOG_H_ #define _PMCSTAT_LOG_H_ -typedef const void *pmcstat_interned_string; +#include <libpmcstat.h> -/* - * A 'pmcstat_process' structure models processes. Each process is - * associated with a set of pmcstat_pcmap structures that map - * addresses inside it to executable objects. This set is implemented - * as a list, kept sorted in ascending order of mapped addresses. - * - * 'pp_pid' holds the pid of the process. When a process exits, the - * 'pp_isactive' field is set to zero, but the process structure is - * not immediately reclaimed because there may still be samples in the - * log for this process. - */ - -struct pmcstat_process { - LIST_ENTRY(pmcstat_process) pp_next; /* hash-next */ - pid_t pp_pid; /* associated pid */ - int pp_isactive; /* whether active */ - uintfptr_t pp_entryaddr; /* entry address */ - TAILQ_HEAD(,pmcstat_pcmap) pp_map; /* address range map */ -}; -extern LIST_HEAD(pmcstat_process_hash_list, pmcstat_process) pmcstat_process_hash[PMCSTAT_NHASH]; - -/* - * A 'pmcstat_image' structure describes an executable program on - * disk. 'pi_execpath' is a cookie representing the pathname of - * the executable. 'pi_start' and 'pi_end' are the least and greatest - * virtual addresses for the text segments in the executable. - * 'pi_gmonlist' contains a linked list of gmon.out files associated - * with this image. - */ - -enum pmcstat_image_type { - PMCSTAT_IMAGE_UNKNOWN = 0, /* never looked at the image */ - PMCSTAT_IMAGE_INDETERMINABLE, /* can't tell what the image is */ - PMCSTAT_IMAGE_ELF32, /* ELF 32 bit object */ - PMCSTAT_IMAGE_ELF64, /* ELF 64 bit object */ - PMCSTAT_IMAGE_AOUT /* AOUT object */ -}; - -struct pmcstat_image { - LIST_ENTRY(pmcstat_image) pi_next; /* hash link */ - pmcstat_interned_string pi_execpath; /* cookie */ - pmcstat_interned_string pi_samplename; /* sample path name */ - pmcstat_interned_string pi_fullpath; /* path to FS object */ - pmcstat_interned_string pi_name; /* display name */ - - enum pmcstat_image_type pi_type; /* executable type */ - - /* - * Executables have pi_start and pi_end; these are zero - * for shared libraries. - */ - uintfptr_t pi_start; /* start address (inclusive) */ - uintfptr_t pi_end; /* end address (exclusive) */ - uintfptr_t pi_entry; /* entry address */ - uintfptr_t pi_vaddr; /* virtual address where loaded */ - int pi_isdynamic; /* whether a dynamic object */ - int pi_iskernelmodule; - pmcstat_interned_string pi_dynlinkerpath; /* path in .interp */ - - /* All symbols associated with this object. */ - struct pmcstat_symbol *pi_symbols; - size_t pi_symcount; - - /* Handle to addr2line for this image. */ - FILE *pi_addr2line; - - /* - * Plugins private data - */ - - /* gprof: - * An image can be associated with one or more gmon.out files; - * one per PMC. - */ - LIST_HEAD(,pmcstat_gmonfile) pi_gmlist; -}; -extern LIST_HEAD(pmcstat_image_hash_list, pmcstat_image) pmcstat_image_hash[PMCSTAT_NHASH]; - -/* - * A 'pmcstat_pcmap' structure maps a virtual address range to an - * underlying 'pmcstat_image' descriptor. - */ -struct pmcstat_pcmap { - TAILQ_ENTRY(pmcstat_pcmap) ppm_next; - uintfptr_t ppm_lowpc; - uintfptr_t ppm_highpc; - struct pmcstat_image *ppm_image; -}; - -/* - * Each function symbol tracked by pmcstat(8). - */ - -struct pmcstat_symbol { - pmcstat_interned_string ps_name; - uint64_t ps_start; - uint64_t ps_end; -}; - -/* - * 'pmcstat_pmcrecord' is a mapping from PMC ids to human-readable - * names. - */ - -struct pmcstat_pmcrecord { - LIST_ENTRY(pmcstat_pmcrecord) pr_next; - pmc_id_t pr_pmcid; - int pr_pmcin; - pmcstat_interned_string pr_pmcname; - int pr_samples; - int pr_dubious_frames; - struct pmcstat_pmcrecord *pr_merge; -}; -extern LIST_HEAD(pmcstat_pmcs, pmcstat_pmcrecord) pmcstat_pmcs; /* PMC list */ - -/* - * Misc. statistics - */ -struct pmcstat_stats { - int ps_exec_aout; /* # a.out executables seen */ - int ps_exec_elf; /* # elf executables seen */ - int ps_exec_errors; /* # errors processing executables */ - int ps_exec_indeterminable; /* # unknown executables seen */ - int ps_samples_total; /* total number of samples processed */ - int ps_samples_skipped; /* #samples filtered out for any reason */ - int ps_samples_unknown_offset; /* #samples of rank 0 not in a map */ - int ps_samples_indeterminable; /* #samples in indeterminable images */ - int ps_samples_unknown_function;/* #samples with unknown function at offset */ - int ps_callchain_dubious_frames;/* #dubious frame pointers seen */ -}; extern struct pmcstat_stats pmcstat_stats; /* statistics */ - extern struct pmcstat_process *pmcstat_kernproc; /* kernel 'process' */ - extern int pmcstat_npmcs; /* PMC count. */ /* @@ -182,17 +50,8 @@ extern int pmcstat_pmcinfilter; /* PMC index displayed. */ const char *pmcstat_pmcid_to_name(pmc_id_t _pmcid); const char *pmcstat_pmcindex_to_name(int pmcin); struct pmcstat_pmcrecord *pmcstat_pmcindex_to_pmcr(int pmcin); -struct pmcstat_pcmap *pmcstat_process_find_map(struct pmcstat_process *_p, - uintfptr_t _pc); -struct pmcstat_symbol *pmcstat_symbol_search(struct pmcstat_image *image, - uintfptr_t addr); -const char *pmcstat_string_unintern(pmcstat_interned_string _is); -pmcstat_interned_string pmcstat_string_intern(const char *_s); -void pmcstat_image_determine_type(struct pmcstat_image *_image); -pmcstat_interned_string pmcstat_string_lookup(const char *_s); int pmcstat_image_addr2line(struct pmcstat_image *image, uintfptr_t addr, char *sourcefile, size_t sourcefile_len, unsigned *sourceline, char *funcname, size_t funcname_len); #endif /* _PMCSTAT_LOG_H_ */ - |