+// © 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
/********************************************************************
* COPYRIGHT:
- * Copyright (c) 1999-2012, International Business Machines Corporation and
+ * Copyright (c) 1999-2015, International Business Machines Corporation and
* others. All Rights Reserved.
********************************************************************/
/* Needed by z/OS to get usleep */
#if U_PLATFORM == U_PF_OS390
#define __DOT1 1
-#define __UU
+#ifndef __UU
+# define __UU
+#endif
#ifndef _XPG4_2
-#define _XPG4_2
+# define _XPG4_2
#endif
#include <unistd.h>
#endif
#if defined(POSIX)
#define HAVE_IMP
-#if (ICU_USE_THREADS == 1)
#include <pthread.h>
-#endif
-
-#if defined(__hpux) && defined(HPUX_CMA)
-# if defined(read) // read being defined as cma_read causes trouble with iostream::read
-# undef read
-# endif
-#endif
#if U_PLATFORM == U_PF_OS390
#include <sys/types.h>
#endif
-#if (ICU_USE_THREADS==0)
- SimpleThread::SimpleThread()
- {}
-
- SimpleThread::~SimpleThread()
- {}
-
- int32_t
- SimpleThread::start()
- { return -1; }
-
- void
- SimpleThread::run()
- {}
-
- void
- SimpleThread::sleep(int32_t millis)
- {}
-
- UBool
- SimpleThread::isRunning() {
- return FALSE;
- }
-#else
-
#include "unicode/putil.h"
/* for mthreadtest*/
}
-UBool SimpleThread::isRunning() {
- //
- // Test whether the thread associated with the SimpleThread object is
- // still actually running.
- //
- // NOTE: on Win64 on Itanium processors, a crashes
- // occur if the main thread of a process exits concurrently with some
- // other thread(s) exiting. To avoid the possibility, we wait until the
- // OS indicates that all threads have terminated, rather than waiting
- // only until the end of the user's Run function has been reached.
- //
- // I don't know whether the crashes represent a Windows bug, or whether
- // main() programs are supposed to have to wait for their threads.
- //
+void SimpleThread::join() {
Win32ThreadImplementation *imp = (Win32ThreadImplementation*)fImplementation;
-
- bool success;
- DWORD threadExitCode;
-
if (imp->fHandle == 0) {
// No handle, thread must not be running.
- return FALSE;
+ return;
}
- success = GetExitCodeThread(imp->fHandle, &threadExitCode) != 0;
- if (! success) {
- // Can't get status, thread must not be running.
- return FALSE;
- }
- return (threadExitCode == STILL_ACTIVE);
-}
-
-
-void SimpleThread::sleep(int32_t millis)
-{
- ::Sleep(millis);
-}
-
-//-----------------------------------------------------------------------------------
-//
-// class SimpleThread NULL Implementation
-//
-//-----------------------------------------------------------------------------------
-#elif U_PLATFORM == U_PF_CLASSIC_MACOS
-
-// since the Mac has no preemptive threading (at least on MacOS 8), only
-// cooperative threading, threads are a no-op. We have no yield() calls
-// anywhere in the ICU, so we are guaranteed to be thread-safe.
-
-#define HAVE_IMP
-
-SimpleThread::SimpleThread()
-{}
-
-SimpleThread::~SimpleThread()
-{}
-
-int32_t
-SimpleThread::start()
-{ return 0; }
-
-void
-SimpleThread::run()
-{}
-
-void
-SimpleThread::sleep(int32_t millis)
-{}
-
-UBool
-SimpleThread::isRunning() {
- return FALSE;
+ WaitForSingleObject(imp->fHandle, INFINITE);
}
#endif
//
// class SimpleThread POSIX implementation
//
-// A note on the POSIX vs the Windows implementations of this class..
-// On Windows, the main thread must verify that other threads have finished
-// before exiting, or crashes occasionally occur. (Seen on Itanium Win64 only)
-// The function SimpleThread::isRunning() is used for this purpose.
-//
-// On POSIX, there is NO reliable non-blocking mechanism to determine
-// whether a thread has exited. pthread_kill(thread, 0) almost works,
-// but the system can recycle thread ids immediately, so seeing that a
-// thread exists with this call could mean that the original thread has
-// finished and a new one started with the same ID. Useless.
-//
-// So we need to do the check with user code, by setting a flag just before
-// the thread function returns. A technique that is guaranteed to fail
-// on Windows, because it indicates that the thread is done before all
-// system level cleanup has happened.
-//
//-----------------------------------------------------------------------------------
#if defined(POSIX)
#define HAVE_IMP
struct PosixThreadImplementation
{
pthread_t fThread;
- UBool fRunning;
- UBool fRan; // True if the thread was successfully started
};
extern "C" void* SimpleThreadProc(void *arg)
{
// This is the code that is run in the new separate thread.
SimpleThread *This = (SimpleThread *)arg;
- This->run(); // Run the user code.
-
- // The user function has returned. Set the flag indicating that this thread
- // is done. Need a mutex for memory barrier purposes only, so that other thread
- // will reliably see that the flag has changed.
- PosixThreadImplementation *imp = (PosixThreadImplementation*)This->fImplementation;
- umtx_lock(NULL);
- imp->fRunning = FALSE;
- umtx_unlock(NULL);
+ This->run();
return 0;
}
SimpleThread::SimpleThread()
{
PosixThreadImplementation *imp = new PosixThreadImplementation;
- imp->fRunning = FALSE;
- imp->fRan = FALSE;
fImplementation = imp;
}
SimpleThread::~SimpleThread()
{
PosixThreadImplementation *imp = (PosixThreadImplementation*)fImplementation;
- if (imp->fRan) {
- pthread_join(imp->fThread, NULL);
- }
delete imp;
fImplementation = (void *)0xdeadbeef;
}
static UBool attrIsInitialized = FALSE;
PosixThreadImplementation *imp = (PosixThreadImplementation*)fImplementation;
- imp->fRunning = TRUE;
- imp->fRan = TRUE;
-#ifdef HPUX_CMA
- if (attrIsInitialized == FALSE) {
- rc = pthread_attr_create(&attr);
- attrIsInitialized = TRUE;
- }
- rc = pthread_create(&(imp->fThread),attr,&SimpleThreadProc,(void*)this);
-#else
if (attrIsInitialized == FALSE) {
rc = pthread_attr_init(&attr);
#if U_PLATFORM == U_PF_OS390
#endif
attrIsInitialized = TRUE;
}
- rc = pthread_create(&(imp->fThread),&attr,&SimpleThreadProc,(void*)this);
-#endif
+ rc = pthread_create(&(imp->fThread), &attr, &SimpleThreadProc, (void*)this);
if (rc != 0) {
// some kind of error occured, the thread did not start.
- imp->fRan = FALSE;
- imp->fRunning = FALSE;
}
return rc;
}
-
-UBool
-SimpleThread::isRunning() {
- // Note: Mutex functions are used here not for synchronization,
- // but to force memory barriors to exist, to ensure that one thread
- // can see changes made by another when running on processors
- // with memory models having weak coherency.
+void SimpleThread::join() {
PosixThreadImplementation *imp = (PosixThreadImplementation*)fImplementation;
- umtx_lock(NULL);
- UBool retVal = imp->fRunning;
- umtx_unlock(NULL);
- return retVal;
+ pthread_join(imp->fThread, NULL);
}
+#endif
+// end POSIX
-void SimpleThread::sleep(int32_t millis)
-{
-#if U_PLATFORM == U_PF_SOLARIS
- sigignore(SIGALRM);
+
+#ifndef HAVE_IMP
+#error No implementation for threads! Cannot test.
#endif
-#ifdef HPUX_CMA
- cma_sleep(millis/100);
-#elif U_PLATFORM == U_PF_HPUX || U_PLATFORM == U_PF_OS390
- millis *= 1000;
- while(millis >= 1000000) {
- usleep(999999);
- millis -= 1000000;
+
+class ThreadPoolThread: public SimpleThread {
+ public:
+ ThreadPoolThread(ThreadPoolBase *pool, int32_t threadNum) : fPool(pool), fNum(threadNum) {};
+ virtual void run() {fPool->callFn(fNum); }
+ ThreadPoolBase *fPool;
+ int32_t fNum;
+};
+
+
+ThreadPoolBase::ThreadPoolBase(IntlTest *test, int32_t howMany) :
+ fIntlTest(test), fNumThreads(howMany), fThreads(NULL) {
+ fThreads = new SimpleThread *[fNumThreads];
+ if (fThreads == NULL) {
+ fIntlTest->errln("%s:%d memory allocation failure.", __FILE__, __LINE__);
+ return;
}
- if(millis > 0) {
- usleep(millis);
+
+ for (int i=0; i<fNumThreads; i++) {
+ fThreads[i] = new ThreadPoolThread(this, i);
+ if (fThreads[i] == NULL) {
+ fIntlTest->errln("%s:%d memory allocation failure.", __FILE__, __LINE__);
+ }
}
-#else
- usleep(millis * 1000);
-#endif
}
-#endif
-// end POSIX
-
+void ThreadPoolBase::start() {
+ for (int i=0; i<fNumThreads; i++) {
+ if (fThreads && fThreads[i]) {
+ fThreads[i]->start();
+ }
+ }
+}
-#ifndef HAVE_IMP
-#error No implementation for threads! Cannot test.
-0 = 216; //die
-#endif
+void ThreadPoolBase::join() {
+ for (int i=0; i<fNumThreads; i++) {
+ if (fThreads && fThreads[i]) {
+ fThreads[i]->join();
+ }
+ }
+}
-//-------------------------------------------------------------------------------------------
-//
-// class ThreadWithStatus - a thread that we can check the status and error condition of
-//
-//-------------------------------------------------------------------------------------------
-class ThreadWithStatus : public SimpleThread
-{
-public:
- UBool getError() { return (fErrors > 0); }
- UBool getError(UnicodeString& fillinError) { fillinError = fErrorString; return (fErrors > 0); }
- virtual ~ThreadWithStatus(){}
-protected:
- ThreadWithStatus() : fErrors(0) {}
- void error(const UnicodeString &error) {
- fErrors++; fErrorString = error;
- SimpleThread::errorFunc();
+ThreadPoolBase::~ThreadPoolBase() {
+ if (fThreads) {
+ for (int i=0; i<fNumThreads; i++) {
+ delete fThreads[i];
+ fThreads[i] = NULL;
+ }
+ delete[] fThreads;
+ fThreads = NULL;
}
- void error() { error("An error occured."); }
-private:
- int32_t fErrors;
- UnicodeString fErrorString;
-};
+}
+
+
-#endif // ICU_USE_THREADS
projects / apple / icu.git / blobdiff