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some debug info remove the preventive munmap reinstate the other munmap for cothread stocks which really should be th...

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Original commit message from CVS:
some debug info
remove the preventive munmap
reinstate the other munmap for cothread stocks which really should be there IMO
This commit is contained in:
Thomas Vander Stichele 2002-06-27 15:52:13 +00:00
parent 61bb83ec4d
commit 8433fe5775
2 changed files with 32 additions and 4 deletions
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2
common

@ -1 +1 @@
Subproject commit 4dab76096cb84988dc2b6366cf5bd964fe5857d7
Subproject commit c6bd62c43f01b2012d81dfa61dd58777c41de07a

34
gst/cothreads.c
View file

@ -26,6 +26,7 @@
#include <signal.h>
#include <setjmp.h>
#include <unistd.h>
#include <errno.h>
#include <sys/mman.h>
#include "gst_private.h"
@ -180,14 +181,13 @@ cothread_create (cothread_context *ctx)
thread = (cothread_state *) (stack_end + ((slot - 1) * COTHREAD_STACKSIZE));
GST_DEBUG (GST_CAT_COTHREADS,
"new cothread slot stack from %p to %p (size %ld)",
"mmap cothread slot stack from %p to %p (size %ld)",
thread, thread + COTHREAD_STACKSIZE - 1,
(long) COTHREAD_STACKSIZE);
GST_DEBUG (GST_CAT_COTHREADS, "going into mmap");
/* the mmap is used to reserve part of the stack
* ie. we state explicitly that we are going to use it */
munmap ((void *) thread, COTHREAD_STACKSIZE);
mmaped = mmap ((void *) thread, COTHREAD_STACKSIZE,
PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
@ -267,6 +267,28 @@ cothread_destroy (cothread_state *thread)
else {
/* this doesn't seem to work very well */
/* munmap ((void *) thread, COTHREAD_STACKSIZE); */
int res;
GST_DEBUG (GST_CAT_COTHREADS,
"unmap cothread slot stack from %p to %p (size %ld)",
thread, thread + COTHREAD_STACKSIZE - 1,
(long) COTHREAD_STACKSIZE);
GST_DEBUG (GST_CAT_COTHREADS, "doing an munmap at %p of size %d\n",
thread, COTHREAD_STACKSIZE);
res = munmap ((void *) thread, COTHREAD_STACKSIZE);
if (res != 0)
{
switch (res)
{
case EINVAL:
g_warning ("munmap doesn't like start %p or length %d\n",
thread, COTHREAD_STACKSIZE);
break;
default:
g_warning ("Thomas was too lazy to check for all errors, so I can't tell you what is wrong.\n");
break;
}
}
}
ctx->threads[threadnum] = NULL;
@ -463,7 +485,7 @@ cothread_context_get_data (cothread_state * thread, gchar * key)
gboolean
cothread_stackquery (void **stack, glong* stacksize)
{
/* wingo: use posix_memalign to allocate a 2M-aligned, 2M stack */
/* wingo says: use posix_memalign to allocate a 2M-aligned, 2M stack */
int retval = 0;
@ -471,6 +493,12 @@ cothread_stackquery (void **stack, glong* stacksize)
if (retval != 0)
{
g_warning ("Could not posix_memalign stack !\n");
if (retval == EINVAL)
g_warning ("The alignment parameter %d was not a power of two !\n",
STACK_SIZE);
if (retval == ENOMEM)
g_warning ("Insufficient memory to allocate the request of %d !\n",
STACK_SIZE);
*stacksize = 0;
return FALSE;
}