| 1 | //===-- memprof_posix.cpp ------------------------------------------------===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | // |
| 9 | // This file is a part of MemProfiler, a memory profiler. |
| 10 | // |
| 11 | // Posix-specific details. |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #include "sanitizer_common/sanitizer_platform.h" |
| 15 | #if !SANITIZER_POSIX |
| 16 | #error Only Posix supported |
| 17 | #endif |
| 18 | |
| 19 | #include "memprof_thread.h" |
| 20 | #include "sanitizer_common/sanitizer_internal_defs.h" |
| 21 | |
| 22 | #include <pthread.h> |
| 23 | |
| 24 | namespace __memprof { |
| 25 | |
| 26 | // ---------------------- TSD ---------------- {{{1 |
| 27 | |
| 28 | static pthread_key_t tsd_key; |
| 29 | static bool tsd_key_inited = false; |
| 30 | void TSDInit(void (*destructor)(void *tsd)) { |
| 31 | CHECK(!tsd_key_inited); |
| 32 | tsd_key_inited = true; |
| 33 | CHECK_EQ(0, pthread_key_create(&tsd_key, destructor)); |
| 34 | } |
| 35 | |
| 36 | void *TSDGet() { |
| 37 | CHECK(tsd_key_inited); |
| 38 | return pthread_getspecific(key: tsd_key); |
| 39 | } |
| 40 | |
| 41 | void TSDSet(void *tsd) { |
| 42 | CHECK(tsd_key_inited); |
| 43 | pthread_setspecific(key: tsd_key, pointer: tsd); |
| 44 | } |
| 45 | |
| 46 | void PlatformTSDDtor(void *tsd) { |
| 47 | MemprofThreadContext *context = (MemprofThreadContext *)tsd; |
| 48 | if (context->destructor_iterations > 1) { |
| 49 | context->destructor_iterations--; |
| 50 | CHECK_EQ(0, pthread_setspecific(tsd_key, tsd)); |
| 51 | return; |
| 52 | } |
| 53 | MemprofThread::TSDDtor(tsd); |
| 54 | } |
| 55 | } // namespace __memprof |
| 56 |