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-rw-r--r--CommonLibs/Threads.h163
1 files changed, 61 insertions, 102 deletions
diff --git a/CommonLibs/Threads.h b/CommonLibs/Threads.h
index df61c72..24fec00 100644
--- a/CommonLibs/Threads.h
+++ b/CommonLibs/Threads.h
@@ -28,143 +28,96 @@
#ifndef THREADS_H
#define THREADS_H
-#include "config.h"
-
+#include <chrono>
+#include <mutex>
+#include <condition_variable>
#include <pthread.h>
#include <iostream>
-#include <assert.h>
+#include <cassert>
#include <unistd.h>
-class Mutex;
-
-
-/**@name Multithreaded access for standard streams. */
-//@{
-
-/**@name Functions for gStreamLock. */
-//@{
-extern Mutex gStreamLock; ///< global lock for cout and cerr
-void lockCerr(); ///< call prior to writing cerr
-void unlockCerr(); ///< call after writing cerr
-void lockCout(); ///< call prior to writing cout
-void unlockCout(); ///< call after writing cout
-//@}
-
-/**@name Macros for standard messages. */
-//@{
-#define COUT(text) { lockCout(); std::cout << text; unlockCout(); }
-#define CERR(text) { lockCerr(); std::cerr << __FILE__ << ":" << __LINE__ << ": " << text; unlockCerr(); }
-#ifdef NDEBUG
-#define DCOUT(text) {}
-#define OBJDCOUT(text) {}
-#else
-#define DCOUT(text) { COUT(__FILE__ << ":" << __LINE__ << " " << text); }
-#define OBJDCOUT(text) { DCOUT(this << " " << text); }
-#endif
-//@}
-//@}
-
+#include "config.h"
+#include "Timeval.h"
+class Mutex;
/**@defgroup C++ wrappers for pthread mechanisms. */
//@{
-/** A class for recursive mutexes based on pthread_mutex. */
+/** A class for recursive mutexes. */
class Mutex {
+ std::recursive_mutex m;
- private:
+ public:
- pthread_mutex_t mMutex;
- pthread_mutexattr_t mAttribs;
-
- public:
-
- Mutex();
-
- ~Mutex();
-
- void lock() { pthread_mutex_lock(&mMutex); }
+ void lock() {
+ m.lock();
+ }
- bool trylock() { return pthread_mutex_trylock(&mMutex)==0; }
+ bool trylock() {
+ return m.try_lock();
+ }
- void unlock() { pthread_mutex_unlock(&mMutex); }
+ void unlock() {
+ m.unlock();
+ }
friend class Signal;
-
};
-
class ScopedLock {
+ Mutex &mMutex;
- private:
- Mutex& mMutex;
-
- public:
- ScopedLock(Mutex& wMutex) :mMutex(wMutex) { mMutex.lock(); }
- ~ScopedLock() { mMutex.unlock(); }
-
+ public:
+ ScopedLock(Mutex &wMutex) : mMutex(wMutex) {
+ mMutex.lock();
+ }
+ ~ScopedLock() {
+ mMutex.unlock();
+ }
};
-
-
-
-/** A C++ interthread signal based on pthread condition variables. */
+/** A C++ interthread signal. */
class Signal {
+ /* any, because for some reason our mutex is recursive... */
+ std::condition_variable_any mSignal;
- private:
-
- mutable pthread_cond_t mSignal;
-
- public:
-
- Signal() { int s = pthread_cond_init(&mSignal,NULL); assert(!s); }
-
- ~Signal() { pthread_cond_destroy(&mSignal); }
+ public:
- /**
- Block for the signal up to the cancellation timeout.
- Under Linux, spurious returns are possible.
- */
- void wait(Mutex& wMutex, unsigned timeout) const;
-
- /**
- Block for the signal.
- Under Linux, spurious returns are possible.
- */
- void wait(Mutex& wMutex) const
- { pthread_cond_wait(&mSignal,&wMutex.mMutex); }
+ void wait(Mutex &wMutex, unsigned timeout) {
+ mSignal.wait_for(wMutex.m, std::chrono::milliseconds(timeout));
+ }
- void signal() { pthread_cond_signal(&mSignal); }
+ void wait(Mutex &wMutex) {
+ mSignal.wait(wMutex.m);
+ }
- void broadcast() { pthread_cond_broadcast(&mSignal); }
+ void signal() {
+ mSignal.notify_one();
+ }
+ void broadcast() {
+ mSignal.notify_all();
+ }
};
-
-
-#define START_THREAD(thread,function,argument) \
- thread.start((void *(*)(void*))function, (void*)argument);
-
void set_selfthread_name(const char *name);
void thread_enable_cancel(bool cancel);
/** A C++ wrapper for pthread threads. */
class Thread {
-
- private:
-
+ private:
pthread_t mThread;
pthread_attr_t mAttrib;
// FIXME -- Can this be reduced now?
size_t mStackSize;
-
- public:
-
+ public:
/** Create a thread in a non-running state. */
- Thread(size_t wStackSize = 0):mThread((pthread_t)0) {
- pthread_attr_init(&mAttrib); // (pat) moved this here.
- mStackSize=wStackSize;
+ Thread(size_t wStackSize = 0) : mThread((pthread_t)0)
+ {
+ pthread_attr_init(&mAttrib); // (pat) moved this here.
+ mStackSize = wStackSize;
}
/**
@@ -172,22 +125,28 @@ class Thread {
It should be stopped and joined.
*/
// (pat) If the Thread is destroyed without being started, then mAttrib is undefined. Oops.
- ~Thread() { pthread_attr_destroy(&mAttrib); }
-
+ ~Thread()
+ {
+ pthread_attr_destroy(&mAttrib);
+ }
/** Start the thread on a task. */
- void start(void *(*task)(void*), void *arg);
+ void start(void *(*task)(void *), void *arg);
/** Join a thread that will stop on its own. */
- void join() {
+ void join()
+ {
if (mThread) {
int s = pthread_join(mThread, NULL);
assert(!s);
}
}
- /** Send cancelation to thread */
- void cancel() { pthread_cancel(mThread); }
+ /** Send cancellation to thread */
+ void cancel()
+ {
+ pthread_cancel(mThread);
+ }
};
#ifdef HAVE_ATOMIC_OPS