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//===-- memprof_stack.cpp ------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file is a part of MemProfiler, a memory profiler.
//
// Code for MemProf stack trace.
//===----------------------------------------------------------------------===//
#include "memprof_stack.h"
#include "memprof_internal.h"
#include "sanitizer_common/sanitizer_atomic.h"
namespace __memprof {
static atomic_uint32_t malloc_context_size;
void SetMallocContextSize(u32 size) {
atomic_store(&malloc_context_size, size, memory_order_release);
}
u32 GetMallocContextSize() {
return atomic_load(&malloc_context_size, memory_order_acquire);
}
} // namespace __memprof
void __sanitizer::BufferedStackTrace::UnwindImpl(uptr pc, uptr bp,
void *context,
bool request_fast,
u32 max_depth) {
using namespace __memprof;
size = 0;
if (UNLIKELY(!memprof_inited))
return;
request_fast = StackTrace::WillUseFastUnwind(request_fast);
MemprofThread *t = GetCurrentThread();
if (request_fast) {
if (t) {
Unwind(max_depth, pc, bp, nullptr, t->stack_top(), t->stack_bottom(),
true);
}
return;
}
Unwind(max_depth, pc, bp, context, 0, 0, false);
}
// ------------------ Interface -------------- {{{1
extern "C" {
SANITIZER_INTERFACE_ATTRIBUTE
void __sanitizer_print_stack_trace() {
using namespace __memprof;
PRINT_CURRENT_STACK();
}
} // extern "C"
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