1*e8d8bef9SDimitry Andric //===-- memprof_descriptions.cpp -------------------------------*- C++ -*-===// 2*e8d8bef9SDimitry Andric // 3*e8d8bef9SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*e8d8bef9SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5*e8d8bef9SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*e8d8bef9SDimitry Andric // 7*e8d8bef9SDimitry Andric //===----------------------------------------------------------------------===// 8*e8d8bef9SDimitry Andric // 9*e8d8bef9SDimitry Andric // This file is a part of MemProfiler, a memory profiler. 10*e8d8bef9SDimitry Andric // 11*e8d8bef9SDimitry Andric // MemProf functions for getting information about an address and/or printing 12*e8d8bef9SDimitry Andric // it. 13*e8d8bef9SDimitry Andric //===----------------------------------------------------------------------===// 14*e8d8bef9SDimitry Andric 15*e8d8bef9SDimitry Andric #include "memprof_descriptions.h" 16*e8d8bef9SDimitry Andric #include "memprof_mapping.h" 17*e8d8bef9SDimitry Andric #include "memprof_stack.h" 18*e8d8bef9SDimitry Andric #include "sanitizer_common/sanitizer_stackdepot.h" 19*e8d8bef9SDimitry Andric 20*e8d8bef9SDimitry Andric namespace __memprof { 21*e8d8bef9SDimitry Andric 22*e8d8bef9SDimitry Andric MemprofThreadIdAndName::MemprofThreadIdAndName(MemprofThreadContext *t) { 23*e8d8bef9SDimitry Andric Init(t->tid, t->name); 24*e8d8bef9SDimitry Andric } 25*e8d8bef9SDimitry Andric 26*e8d8bef9SDimitry Andric MemprofThreadIdAndName::MemprofThreadIdAndName(u32 tid) { 27*e8d8bef9SDimitry Andric if (tid == kInvalidTid) { 28*e8d8bef9SDimitry Andric Init(tid, ""); 29*e8d8bef9SDimitry Andric } else { 30*e8d8bef9SDimitry Andric memprofThreadRegistry().CheckLocked(); 31*e8d8bef9SDimitry Andric MemprofThreadContext *t = GetThreadContextByTidLocked(tid); 32*e8d8bef9SDimitry Andric Init(tid, t->name); 33*e8d8bef9SDimitry Andric } 34*e8d8bef9SDimitry Andric } 35*e8d8bef9SDimitry Andric 36*e8d8bef9SDimitry Andric void MemprofThreadIdAndName::Init(u32 tid, const char *tname) { 37*e8d8bef9SDimitry Andric int len = internal_snprintf(name, sizeof(name), "T%d", tid); 38*e8d8bef9SDimitry Andric CHECK(((unsigned int)len) < sizeof(name)); 39*e8d8bef9SDimitry Andric if (tname[0] != '\0') 40*e8d8bef9SDimitry Andric internal_snprintf(&name[len], sizeof(name) - len, " (%s)", tname); 41*e8d8bef9SDimitry Andric } 42*e8d8bef9SDimitry Andric 43*e8d8bef9SDimitry Andric void DescribeThread(MemprofThreadContext *context) { 44*e8d8bef9SDimitry Andric CHECK(context); 45*e8d8bef9SDimitry Andric memprofThreadRegistry().CheckLocked(); 46*e8d8bef9SDimitry Andric // No need to announce the main thread. 47*e8d8bef9SDimitry Andric if (context->tid == 0 || context->announced) { 48*e8d8bef9SDimitry Andric return; 49*e8d8bef9SDimitry Andric } 50*e8d8bef9SDimitry Andric context->announced = true; 51*e8d8bef9SDimitry Andric InternalScopedString str(1024); 52*e8d8bef9SDimitry Andric str.append("Thread %s", MemprofThreadIdAndName(context).c_str()); 53*e8d8bef9SDimitry Andric if (context->parent_tid == kInvalidTid) { 54*e8d8bef9SDimitry Andric str.append(" created by unknown thread\n"); 55*e8d8bef9SDimitry Andric Printf("%s", str.data()); 56*e8d8bef9SDimitry Andric return; 57*e8d8bef9SDimitry Andric } 58*e8d8bef9SDimitry Andric str.append(" created by %s here:\n", 59*e8d8bef9SDimitry Andric MemprofThreadIdAndName(context->parent_tid).c_str()); 60*e8d8bef9SDimitry Andric Printf("%s", str.data()); 61*e8d8bef9SDimitry Andric StackDepotGet(context->stack_id).Print(); 62*e8d8bef9SDimitry Andric // Recursively described parent thread if needed. 63*e8d8bef9SDimitry Andric if (flags()->print_full_thread_history) { 64*e8d8bef9SDimitry Andric MemprofThreadContext *parent_context = 65*e8d8bef9SDimitry Andric GetThreadContextByTidLocked(context->parent_tid); 66*e8d8bef9SDimitry Andric DescribeThread(parent_context); 67*e8d8bef9SDimitry Andric } 68*e8d8bef9SDimitry Andric } 69*e8d8bef9SDimitry Andric 70*e8d8bef9SDimitry Andric } // namespace __memprof 71