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* dll_init.h (has_dtors): New flag.

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(run_dtors): New wrapper function which avoids calling dtors more than once.
* dll_init.cc (dll_global_dtors): Use dll.run_dtors wrapper.
(dll_list::detach): Ditto.
(dll_list::alloc): Set has_dtors flag.
This commit is contained in:
Christopher Faylor 2009-08-21 21:32:06 +00:00
parent e41f43a1a6
commit 6282fe16dd
3 changed files with 22 additions and 2 deletions
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9
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,12 @@
2009-08-21 Christopher Faylor <me+cygwin@cgf.cx>
* dll_init.h (has_dtors): New flag.
(run_dtors): New wrapper function which avoids calling dtors more than
once.
* dll_init.cc (dll_global_dtors): Use dll.run_dtors wrapper.
(dll_list::detach): Ditto.
(dll_list::alloc): Set has_dtors flag.
2009-08-21 Christopher Faylor <me+cygwin@cgf.cx>
* fcntl.cc (fcntl64): Detect negative fd as error.

6
winsup/cygwin/dll_init.cc
View File

@ -35,7 +35,7 @@ dll_global_dtors ()
dll_global_dtors_recorded = false;
if (recorded && dlls.start.next)
for (dll *d = dlls.end; d != &dlls.start; d = d->prev)
d->p.run_dtors ();
d->run_dtors ();
}
/* Run all constructors associated with a dll */
@ -119,6 +119,7 @@ dll_list::alloc (HINSTANCE h, per_process *p, dll_type type)
return d; /* Return previously allocated pointer. */
}
/* FIXME: Change this to new at some point. */
d = (dll *) cmalloc (HEAP_2_DLL, sizeof (*d) + (namelen * sizeof (*name)));
/* Now we've allocated a block of information. Fill it in with the supplied
@ -126,6 +127,7 @@ dll_list::alloc (HINSTANCE h, per_process *p, dll_type type)
d->count = 1;
wcscpy (d->name, name);
d->handle = h;
d->has_dtors = true;
d->p = p;
d->type = type;
if (end == NULL)
@ -159,7 +161,7 @@ dll_list::detach (void *retaddr)
system_printf ("WARNING: trying to detach an already detached dll ...");
else if (--d->count == 0)
{
d->p.run_dtors ();
d->run_dtors ();
d->prev->next = d->next;
if (d->next)
d->next->prev = d->prev;

9
winsup/cygwin/dll_init.h
View File

@ -50,10 +50,19 @@ struct dll
per_module p;
HMODULE handle;
int count;
bool has_dtors;
dll_type type;
WCHAR name[1];
void detach ();
int init ();
void run_dtors ()
{
if (has_dtors)
{
has_dtors = 0;
p.run_dtors ();
}
}
};
#define MAX_DLL_BEFORE_INIT 100