Differences From Artifact [08a22e6008]:
- File
src/platform/posix/thread.m
— part of check-in
[5b37fbeb82]
at
2020-12-20 21:26:08
on branch trunk
— Return error instead of using errno for threading
errno is problematic for Amiga libraries and is also not thread-safe on
some systems, even though it should. (user: js, size: 4070) [annotate] [blame] [check-ins using] [more...]
To Artifact [e7022e7dec]:
- File
src/platform/posix/thread.m
— part of check-in
[e45e320379]
at
2021-01-01 18:49:42
on branch trunk
— Handle pthread attrs being unavailable
This is the case on HP-UX, where pthread_attr_init() returns ENOSYS. (user: js, size: 4330) [annotate] [blame] [check-ins using]
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/*
* This is done here to make sure this is done as early as possible in the main
* thread.
*/
OF_CONSTRUCTOR()
{
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/*
* This is done here to make sure this is done as early as possible in the main
* thread.
*/
OF_CONSTRUCTOR()
{
pthread_attr_t attr;
if (pthread_attr_init(&attr) == 0) {
#ifdef HAVE_PTHREAD_ATTR_GETSCHEDPOLICY
int policy;
#endif
struct sched_param param;
#ifdef HAVE_PTHREAD_ATTR_GETSCHEDPOLICY
if (pthread_attr_getschedpolicy(&attr, &policy) == 0) {
minPrio = sched_get_priority_min(policy);
maxPrio = sched_get_priority_max(policy);
if (minPrio == -1 || maxPrio == -1)
minPrio = maxPrio = 0;
}
#endif
if (pthread_attr_getschedparam(&attr, ¶m) != 0)
normalPrio = param.sched_priority;
else
minPrio = maxPrio = 0;
pthread_attr_destroy(&attr);
}
}
static void *
functionWrapper(void *data)
{
struct thread_ctx *ctx = data;
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return NULL;
}
int
of_thread_attr_init(of_thread_attr_t *attr)
{
int error;
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return NULL;
}
int
of_thread_attr_init(of_thread_attr_t *attr)
{
int error;
pthread_attr_t POSIXAttr;
attr->priority = 0;
attr->stackSize = 0;
if ((error = pthread_attr_init(&POSIXAttr)) != 0) {
if (error == ENOSYS)
return 0;
return error;
}
error = pthread_attr_getstacksize(&POSIXAttr, &attr->stackSize);
pthread_attr_destroy(&POSIXAttr);
return error;
}
int
of_thread_new(of_thread_t *thread, const char *name, void (*function)(id),
id object, const of_thread_attr_t *attr)
{
int error = 0;
pthread_attr_t POSIXAttr;
bool POSIXAttrAvailable = true;
if ((error = pthread_attr_init(&POSIXAttr)) != 0) {
if (error == ENOSYS)
POSIXAttrAvailable = false;
else
return error;
}
@try {
struct thread_ctx *ctx;
if (attr != NULL && POSIXAttrAvailable) {
struct sched_param param;
if (attr->priority < -1 || attr->priority > 1)
return EINVAL;
#ifdef HAVE_PTHREAD_ATTR_SETINHERITSCHED
if ((error = pthread_attr_setinheritsched(&POSIXAttr,
PTHREAD_EXPLICIT_SCHED)) != 0)
return error;
#endif
if (attr->priority < 0) {
param.sched_priority = minPrio +
(1.0f + attr->priority) *
(normalPrio - minPrio);
} else
param.sched_priority = normalPrio +
attr->priority * (maxPrio - normalPrio);
if ((error = pthread_attr_setschedparam(&POSIXAttr,
¶m)) != 0)
return error;
if (attr->stackSize > 0) {
if ((error = pthread_attr_setstacksize(
&POSIXAttr, attr->stackSize)) != 0)
return error;
}
}
if ((ctx = malloc(sizeof(*ctx))) == NULL)
return ENOMEM;
ctx->function = function;
ctx->object = object;
ctx->name = name;
error = pthread_create(thread, &POSIXAttr, functionWrapper,
ctx);
} @finally {
if (POSIXAttrAvailable)
pthread_attr_destroy(&POSIXAttr);
}
return error;
}
int
of_thread_join(of_thread_t thread)
|
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