db44538387
Switch to the better supported pthread_cond to handle the Wait/Wake functions. Also, increase the number of simultaneous threads in the thread tests. Bug: 18381207 Change-Id: I63240208e8b7f641b3f35a3fc0bb1acf80dc796e
92 lines
2.3 KiB
C++
92 lines
2.3 KiB
C++
/*
|
|
* Copyright (C) 2013 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef _LIBBACKTRACE_BACKTRACE_THREAD_H
|
|
#define _LIBBACKTRACE_BACKTRACE_THREAD_H
|
|
|
|
#include <inttypes.h>
|
|
#include <pthread.h>
|
|
#include <signal.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
#include <ucontext.h>
|
|
|
|
#include "BacktraceImpl.h"
|
|
|
|
// The signal used to cause a thread to dump the stack.
|
|
#if defined(__GLIBC__)
|
|
// GLIBC reserves __SIGRTMIN signals, so use SIGRTMIN to avoid errors.
|
|
#define THREAD_SIGNAL SIGRTMIN
|
|
#else
|
|
#define THREAD_SIGNAL (__SIGRTMIN+1)
|
|
#endif
|
|
|
|
class ThreadEntry {
|
|
public:
|
|
static ThreadEntry* Get(pid_t pid, pid_t tid, bool create = true);
|
|
|
|
static void Remove(ThreadEntry* entry);
|
|
|
|
void Wake();
|
|
|
|
void Wait(int);
|
|
|
|
void CopyUcontextFromSigcontext(void*);
|
|
|
|
inline void Lock() {
|
|
pthread_mutex_lock(&mutex_);
|
|
|
|
// Always reset the wait value since this could be the first or nth
|
|
// time this entry is locked.
|
|
wait_value_ = 0;
|
|
}
|
|
|
|
inline void Unlock() {
|
|
pthread_mutex_unlock(&mutex_);
|
|
}
|
|
|
|
inline ucontext_t* GetUcontext() { return &ucontext_; }
|
|
|
|
private:
|
|
ThreadEntry(pid_t pid, pid_t tid);
|
|
~ThreadEntry();
|
|
|
|
bool Match(pid_t chk_pid, pid_t chk_tid) { return (chk_pid == pid_ && chk_tid == tid_); }
|
|
|
|
pid_t pid_;
|
|
pid_t tid_;
|
|
int ref_count_;
|
|
pthread_mutex_t mutex_;
|
|
pthread_mutex_t wait_mutex_;
|
|
pthread_cond_t wait_cond_;
|
|
int wait_value_;
|
|
ThreadEntry* next_;
|
|
ThreadEntry* prev_;
|
|
ucontext_t ucontext_;
|
|
|
|
static ThreadEntry* list_;
|
|
static pthread_mutex_t list_mutex_;
|
|
};
|
|
|
|
class BacktraceThread : public BacktraceCurrent {
|
|
public:
|
|
BacktraceThread(BacktraceImpl* impl, pid_t tid, BacktraceMap* map);
|
|
virtual ~BacktraceThread();
|
|
|
|
virtual bool Unwind(size_t num_ignore_frames, ucontext_t* ucontext);
|
|
};
|
|
|
|
#endif // _LIBBACKTRACE_BACKTRACE_THREAD_H
|