/*
- Copyright (C) 2002 Paul Davis
+ Copyright (C) 2002 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
$Id$
*/
-#include <map>
-#include <iostream>
+#include <set>
#include <string>
+#include <cstring>
#include <stdint.h>
#include "pbd/pthread_utils.h"
+#ifdef WINE_THREAD_SUPPORT
+#include <fst.h>
+#endif
+
+#ifdef COMPILER_MSVC
+DECLARE_DEFAULT_COMPARISONS(pthread_t) // Needed for 'DECLARE_DEFAULT_COMPARISONS'. Objects in an STL container can be
+ // searched and sorted. Thus, when instantiating the container, MSVC complains
+ // if the type of object being contained has no appropriate comparison operators
+ // defined (specifically, if operators '<' and '==' are undefined). This seems
+ // to be the case with ptw32 'pthread_t' which is a simple struct.
+#endif
using namespace std;
-typedef std::map<string,pthread_t> ThreadMap;
+typedef std::list<pthread_t> ThreadMap;
static ThreadMap all_threads;
static pthread_mutex_t thread_map_lock = PTHREAD_MUTEX_INITIALIZER;
-static pthread_mutex_t gui_notify_lock = PTHREAD_MUTEX_INITIALIZER;
+static Glib::Threads::Private<char> thread_name (free);
namespace PBD {
- sigc::signal<void,pthread_t> ThreadLeaving;
- sigc::signal<void,pthread_t,std::string,uint32_t> ThreadCreatedWithRequestSize;
+ PBD::Signal3<void,pthread_t,std::string,uint32_t> ThreadCreatedWithRequestSize;
}
using namespace PBD;
-void
-PBD::notify_gui_about_thread_creation (pthread_t thread, std::string str, int request_count)
+static int thread_creator (pthread_t* thread_id, const pthread_attr_t* attr, void *(*function)(void*), void* arg)
{
- pthread_mutex_lock (&gui_notify_lock);
- ThreadCreatedWithRequestSize (thread, str, request_count);
- pthread_mutex_unlock (&gui_notify_lock);
+#ifdef WINE_THREAD_SUPPORT
+ return wine_pthread_create (thread_id, attr, function, arg);
+#else
+ return pthread_create (thread_id, attr, function, arg);
+#endif
}
+
void
-PBD::notify_gui_about_thread_exit (pthread_t thread)
+PBD::notify_event_loops_about_thread_creation (pthread_t thread, const std::string& emitting_thread_name, int request_count)
{
- pthread_mutex_lock (&gui_notify_lock);
- ThreadLeaving (thread);
- pthread_mutex_unlock (&gui_notify_lock);
+ /* notify threads that may exist in the future (they may also exist
+ * already, in which case they will catch the
+ * ThreadCreatedWithRequestSize signal)
+ */
+ EventLoop::pre_register (emitting_thread_name, request_count);
+
+ /* notify all existing threads */
+ ThreadCreatedWithRequestSize (thread, emitting_thread_name, request_count);
}
-int
-pthread_create_and_store (string name, pthread_t *thread, pthread_attr_t *attr, void * (*start_routine)(void *), void * arg)
+struct ThreadStartWithName {
+ void* (*thread_work)(void*);
+ void* arg;
+ std::string name;
+
+ ThreadStartWithName (void* (*f)(void*), void* a, const std::string& s)
+ : thread_work (f), arg (a), name (s) {}
+};
+
+static void*
+fake_thread_start (void* arg)
{
- int ret;
+ ThreadStartWithName* ts = (ThreadStartWithName*) arg;
+ void* (*thread_work)(void*) = ts->thread_work;
+ void* thread_arg = ts->arg;
- pthread_attr_t default_attr;
- bool use_default_attr = (attr == NULL);
-
- if (use_default_attr) {
- // set default stack size to sensible default for memlocking
- pthread_attr_init(&default_attr);
- pthread_attr_setstacksize(&default_attr, 500000);
- attr = &default_attr;
+ /* name will be deleted by the default handler for GStaticPrivate, when the thread exits */
+
+ pthread_set_name (ts->name.c_str());
+
+ /* we don't need this object anymore */
+
+ delete ts;
+
+ /* actually run the thread's work function */
+
+ void* ret = thread_work (thread_arg);
+
+ /* cleanup */
+
+ pthread_mutex_lock (&thread_map_lock);
+
+ for (ThreadMap::iterator i = all_threads.begin(); i != all_threads.end(); ++i) {
+ if (pthread_equal ((*i), pthread_self())) {
+ all_threads.erase (i);
+ break;
+ }
}
- if ((ret = pthread_create (thread, attr, start_routine, arg)) == 0) {
- std::pair<string,pthread_t> newpair;
- newpair.first = name;
- newpair.second = *thread;
+ pthread_mutex_unlock (&thread_map_lock);
+
+ /* done */
- pthread_mutex_lock (&thread_map_lock);
- all_threads.insert (newpair);
+ return ret;
+}
+int
+pthread_create_and_store (string name, pthread_t *thread, void * (*start_routine)(void *), void * arg)
+{
+ pthread_attr_t default_attr;
+ int ret;
+
+ // set default stack size to sensible default for memlocking
+ pthread_attr_init(&default_attr);
+ pthread_attr_setstacksize(&default_attr, 500000);
+
+ ThreadStartWithName* ts = new ThreadStartWithName (start_routine, arg, name);
+
+ if ((ret = thread_creator (thread, &default_attr, fake_thread_start, ts)) == 0) {
+ pthread_mutex_lock (&thread_map_lock);
+ all_threads.push_back (*thread);
pthread_mutex_unlock (&thread_map_lock);
}
- if (use_default_attr) {
- pthread_attr_destroy(&default_attr);
- }
-
+ pthread_attr_destroy(&default_attr);
+
return ret;
}
-string
+void
+pthread_set_name (const char *str)
+{
+ /* copy string and delete it when exiting */
+
+ thread_name.set (strdup (str));
+}
+
+const char *
pthread_name ()
{
- pthread_t self = pthread_self();
- string str;
+ const char* str = thread_name.get ();
- pthread_mutex_lock (&thread_map_lock);
- for (ThreadMap::iterator i = all_threads.begin(); i != all_threads.end(); ++i) {
- if (i->second == self) {
- str = i->first;
- pthread_mutex_unlock (&thread_map_lock);
- return str;
- }
+ if (str) {
+ return str;
}
- pthread_mutex_unlock (&thread_map_lock);
return "unknown";
}
void
-pthread_kill_all (int signum)
-{
+pthread_kill_all (int signum)
+{
pthread_mutex_lock (&thread_map_lock);
for (ThreadMap::iterator i = all_threads.begin(); i != all_threads.end(); ++i) {
- if (i->second != pthread_self()) {
- pthread_kill (i->second, signum);
+ if (!pthread_equal ((*i), pthread_self())) {
+ pthread_kill ((*i), signum);
}
}
all_threads.clear();
}
void
-pthread_cancel_all ()
-{
+pthread_cancel_all ()
+{
pthread_mutex_lock (&thread_map_lock);
- for (ThreadMap::iterator i = all_threads.begin(); i != all_threads.end(); ++i) {
- if (i->second != pthread_self()) {
- pthread_cancel (i->second);
+
+ for (ThreadMap::iterator i = all_threads.begin(); i != all_threads.end(); ) {
+
+ ThreadMap::iterator nxt = i;
+ ++nxt;
+
+ if (!pthread_equal ((*i), pthread_self())) {
+ pthread_cancel ((*i));
}
+
+ i = nxt;
}
all_threads.clear();
pthread_mutex_unlock (&thread_map_lock);
}
void
-pthread_cancel_one (pthread_t thread)
-{
+pthread_cancel_one (pthread_t thread)
+{
pthread_mutex_lock (&thread_map_lock);
for (ThreadMap::iterator i = all_threads.begin(); i != all_threads.end(); ++i) {
- if (i->second == thread) {
+ if (pthread_equal ((*i), thread)) {
all_threads.erase (i);
break;
}
pthread_cancel (thread);
pthread_mutex_unlock (&thread_map_lock);
}
-
-void
-pthread_exit_pbd (void* status)
-{
- pthread_t thread = pthread_self();
-
- pthread_mutex_lock (&thread_map_lock);
- for (ThreadMap::iterator i = all_threads.begin(); i != all_threads.end(); ++i) {
- if (i->second == thread) {
- all_threads.erase (i);
- break;
- }
- }
- pthread_mutex_unlock (&thread_map_lock);
- pthread_exit (status);
-}
projects / ardour.git / blobdiff