// CarbonThreadManager.c
#include <pthread.h>
#include <mach/mach.h>
#include <CoreServices/CoreServices.h>
#define MAXTHREADS 8
static ThreadID mainThread;
static ThreadID newThreads[MAXTHREADS] = { 0 };
voidPtr
threadFunction(void *threadParam)
{
int i = (int)threadParam;
printf("thread #%d: CTM %#08lx, pthread %p, Mach %#08x\n",
i, newThreads[i], pthread_self(), mach_thread_self());
if (i == MAXTHREADS)
YieldToThread(mainThread);
else
YieldToThread(newThreads[i + 1]);
/* NOTREACHED */
printf("Whoa!\n");
return threadParam;
}
int
main()
{
int i;
OSErr err = noErr;
// main thread's ID
err = GetCurrentThread(&mainThread);
for (i = 0; i < MAXTHREADS; i++) {
err = NewThread(
kCooperativeThread, // type of thread
threadFunction, // thread entry function
(void *)i, // function parameter
(Size)0, // default stack size
kNewSuspend, // options
NULL, // not interested
&(newThreads[i])); // newly created thread
if (err || (newThreads[i] == kNoThreadID)) {
printf("*** NewThread failed\n");
goto out;
}
// set state of thread to "ready"
err = SetThreadState(newThreads[i], kReadyThreadState, kNoThreadID);
}
printf("main: created %d new threads\n", i);
printf("main: relinquishing control to next thread\n");
err = YieldToThread(newThreads[0]);
printf("main: back\n");
out:
// destroy all threads
for (i = 0; i < MAXTHREADS; i++)
if (newThreads[i])
DisposeThread(newThreads[i], NULL, false);
exit(err);
}
haidragondeMacBook-Pro:7-37 haidragon$ ls
CarbonThreadManager CarbonThreadManager.c
haidragondeMacBook-Pro:7-37 haidragon$ ./CarbonThreadManager
main: created 8 new threads
main: relinquishing control to next thread
thread #0: CTM 0x700008e69000, pthread 0x700008e69000, Mach 0x002903
thread #1: CTM 0x700008eec000, pthread 0x700008eec000, Mach 0x001903
thread #2: CTM 0x700008f6f000, pthread 0x700008f6f000, Mach 0x001a03
thread #3: CTM 0x700008ff2000, pthread 0x700008ff2000, Mach 0x001b03
thread #4: CTM 0x700009075000, pthread 0x700009075000, Mach 0x002503
thread #5: CTM 0x7000090f8000, pthread 0x7000090f8000, Mach 0x002403
thread #6: CTM 0x70000917b000, pthread 0x70000917b000, Mach 0x001e03
thread #7: CTM 0x7000091fe000, pthread 0x7000091fe000, Mach 0x001f03
main: back
haidragondeMacBook-Pro:7-37 haidragon$ gcc -Wall -o CarbonThreadManager CarbonThreadManager.c -framework Carbon
