1*d89ec533Spatrick //===-- memprof_stack.h ----------------------------------------*- C++ -*-===// 2*d89ec533Spatrick // 3*d89ec533Spatrick // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*d89ec533Spatrick // See https://llvm.org/LICENSE.txt for license information. 5*d89ec533Spatrick // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*d89ec533Spatrick // 7*d89ec533Spatrick //===----------------------------------------------------------------------===// 8*d89ec533Spatrick // 9*d89ec533Spatrick // This file is a part of MemProfiler, a memory profiler. 10*d89ec533Spatrick // 11*d89ec533Spatrick // MemProf-private header for memprof_stack.cpp. 12*d89ec533Spatrick //===----------------------------------------------------------------------===// 13*d89ec533Spatrick 14*d89ec533Spatrick #ifndef MEMPROF_STACK_H 15*d89ec533Spatrick #define MEMPROF_STACK_H 16*d89ec533Spatrick 17*d89ec533Spatrick #include "memprof_flags.h" 18*d89ec533Spatrick #include "memprof_thread.h" 19*d89ec533Spatrick #include "sanitizer_common/sanitizer_flags.h" 20*d89ec533Spatrick #include "sanitizer_common/sanitizer_stacktrace.h" 21*d89ec533Spatrick 22*d89ec533Spatrick namespace __memprof { 23*d89ec533Spatrick 24*d89ec533Spatrick static const u32 kDefaultMallocContextSize = 30; 25*d89ec533Spatrick 26*d89ec533Spatrick void SetMallocContextSize(u32 size); 27*d89ec533Spatrick u32 GetMallocContextSize(); 28*d89ec533Spatrick 29*d89ec533Spatrick } // namespace __memprof 30*d89ec533Spatrick 31*d89ec533Spatrick // NOTE: A Rule of thumb is to retrieve stack trace in the interceptors 32*d89ec533Spatrick // as early as possible (in functions exposed to the user), as we generally 33*d89ec533Spatrick // don't want stack trace to contain functions from MemProf internals. 34*d89ec533Spatrick 35*d89ec533Spatrick #define GET_STACK_TRACE(max_size, fast) \ 36*d89ec533Spatrick BufferedStackTrace stack; \ 37*d89ec533Spatrick if (max_size <= 2) { \ 38*d89ec533Spatrick stack.size = max_size; \ 39*d89ec533Spatrick if (max_size > 0) { \ 40*d89ec533Spatrick stack.top_frame_bp = GET_CURRENT_FRAME(); \ 41*d89ec533Spatrick stack.trace_buffer[0] = StackTrace::GetCurrentPc(); \ 42*d89ec533Spatrick if (max_size > 1) \ 43*d89ec533Spatrick stack.trace_buffer[1] = GET_CALLER_PC(); \ 44*d89ec533Spatrick } \ 45*d89ec533Spatrick } else { \ 46*d89ec533Spatrick stack.Unwind(StackTrace::GetCurrentPc(), GET_CURRENT_FRAME(), nullptr, \ 47*d89ec533Spatrick fast, max_size); \ 48*d89ec533Spatrick } 49*d89ec533Spatrick 50*d89ec533Spatrick #define GET_STACK_TRACE_FATAL_HERE \ 51*d89ec533Spatrick GET_STACK_TRACE(kStackTraceMax, common_flags()->fast_unwind_on_fatal) 52*d89ec533Spatrick 53*d89ec533Spatrick #define GET_STACK_TRACE_THREAD GET_STACK_TRACE(kStackTraceMax, true) 54*d89ec533Spatrick 55*d89ec533Spatrick #define GET_STACK_TRACE_MALLOC \ 56*d89ec533Spatrick GET_STACK_TRACE(GetMallocContextSize(), common_flags()->fast_unwind_on_malloc) 57*d89ec533Spatrick 58*d89ec533Spatrick #define GET_STACK_TRACE_FREE GET_STACK_TRACE_MALLOC 59*d89ec533Spatrick 60*d89ec533Spatrick #define PRINT_CURRENT_STACK() \ 61*d89ec533Spatrick { \ 62*d89ec533Spatrick GET_STACK_TRACE_FATAL_HERE; \ 63*d89ec533Spatrick stack.Print(); \ 64*d89ec533Spatrick } 65*d89ec533Spatrick 66*d89ec533Spatrick #endif // MEMPROF_STACK_H 67