| //===-- 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" |
