1e8d8bef9SDimitry Andric //===-- memprof_descriptions.cpp -------------------------------*- C++ -*-===// 2e8d8bef9SDimitry Andric // 3e8d8bef9SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4e8d8bef9SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5e8d8bef9SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6e8d8bef9SDimitry Andric // 7e8d8bef9SDimitry Andric //===----------------------------------------------------------------------===// 8e8d8bef9SDimitry Andric // 9e8d8bef9SDimitry Andric // This file is a part of MemProfiler, a memory profiler. 10e8d8bef9SDimitry Andric // 11e8d8bef9SDimitry Andric // MemProf functions for getting information about an address and/or printing 12e8d8bef9SDimitry Andric // it. 13e8d8bef9SDimitry Andric //===----------------------------------------------------------------------===// 14e8d8bef9SDimitry Andric 15e8d8bef9SDimitry Andric #include "memprof_descriptions.h" 16e8d8bef9SDimitry Andric #include "memprof_mapping.h" 17e8d8bef9SDimitry Andric #include "memprof_stack.h" 18e8d8bef9SDimitry Andric #include "sanitizer_common/sanitizer_stackdepot.h" 19e8d8bef9SDimitry Andric 20e8d8bef9SDimitry Andric namespace __memprof { 21e8d8bef9SDimitry Andric 22e8d8bef9SDimitry Andric MemprofThreadIdAndName::MemprofThreadIdAndName(MemprofThreadContext *t) { 23e8d8bef9SDimitry Andric Init(t->tid, t->name); 24e8d8bef9SDimitry Andric } 25e8d8bef9SDimitry Andric 26e8d8bef9SDimitry Andric MemprofThreadIdAndName::MemprofThreadIdAndName(u32 tid) { 27e8d8bef9SDimitry Andric if (tid == kInvalidTid) { 28e8d8bef9SDimitry Andric Init(tid, ""); 29e8d8bef9SDimitry Andric } else { 30e8d8bef9SDimitry Andric memprofThreadRegistry().CheckLocked(); 31e8d8bef9SDimitry Andric MemprofThreadContext *t = GetThreadContextByTidLocked(tid); 32e8d8bef9SDimitry Andric Init(tid, t->name); 33e8d8bef9SDimitry Andric } 34e8d8bef9SDimitry Andric } 35e8d8bef9SDimitry Andric 36e8d8bef9SDimitry Andric void MemprofThreadIdAndName::Init(u32 tid, const char *tname) { 37e8d8bef9SDimitry Andric int len = internal_snprintf(name, sizeof(name), "T%d", tid); 38e8d8bef9SDimitry Andric CHECK(((unsigned int)len) < sizeof(name)); 39e8d8bef9SDimitry Andric if (tname[0] != '\0') 40e8d8bef9SDimitry Andric internal_snprintf(&name[len], sizeof(name) - len, " (%s)", tname); 41e8d8bef9SDimitry Andric } 42e8d8bef9SDimitry Andric 43e8d8bef9SDimitry Andric void DescribeThread(MemprofThreadContext *context) { 44e8d8bef9SDimitry Andric CHECK(context); 45e8d8bef9SDimitry Andric memprofThreadRegistry().CheckLocked(); 46e8d8bef9SDimitry Andric // No need to announce the main thread. 47fe6060f1SDimitry Andric if (context->tid == kMainTid || context->announced) { 48e8d8bef9SDimitry Andric return; 49e8d8bef9SDimitry Andric } 50e8d8bef9SDimitry Andric context->announced = true; 51fe6060f1SDimitry Andric InternalScopedString str; 525f757f3fSDimitry Andric str.AppendF("Thread %s", MemprofThreadIdAndName(context).c_str()); 53e8d8bef9SDimitry Andric if (context->parent_tid == kInvalidTid) { 54*0fca6ea1SDimitry Andric str.Append(" created by unknown thread\n"); 55e8d8bef9SDimitry Andric Printf("%s", str.data()); 56e8d8bef9SDimitry Andric return; 57e8d8bef9SDimitry Andric } 585f757f3fSDimitry Andric str.AppendF(" created by %s here:\n", 59e8d8bef9SDimitry Andric MemprofThreadIdAndName(context->parent_tid).c_str()); 60e8d8bef9SDimitry Andric Printf("%s", str.data()); 61e8d8bef9SDimitry Andric StackDepotGet(context->stack_id).Print(); 62e8d8bef9SDimitry Andric // Recursively described parent thread if needed. 63e8d8bef9SDimitry Andric if (flags()->print_full_thread_history) { 64e8d8bef9SDimitry Andric MemprofThreadContext *parent_context = 65e8d8bef9SDimitry Andric GetThreadContextByTidLocked(context->parent_tid); 66e8d8bef9SDimitry Andric DescribeThread(parent_context); 67e8d8bef9SDimitry Andric } 68e8d8bef9SDimitry Andric } 69e8d8bef9SDimitry Andric 70e8d8bef9SDimitry Andric } // namespace __memprof 71