зеркало из https://github.com/mozilla/pjs.git
77 строки
1.8 KiB
C
77 строки
1.8 KiB
C
/*
|
|
generic_threads.c
|
|
|
|
A module that permits clients of the GC to supply callback functions
|
|
for thread stack scanning.
|
|
|
|
by Patrick C. Beard.
|
|
*/
|
|
|
|
#include "generic_threads.h"
|
|
# include "gc_priv.h"
|
|
# include "gc_mark.h"
|
|
|
|
static void mark_range(char* begin, char* end)
|
|
{
|
|
while (begin < end) {
|
|
GC_PUSH_ONE_STACK(*(word*)begin, 0);
|
|
begin += ALIGNMENT;
|
|
}
|
|
}
|
|
|
|
/*
|
|
Until a client installs a stack marking routine, this will mark the
|
|
current stack. This is crucial to keep data live during program
|
|
startup.
|
|
*/
|
|
static void default_mark_all_stacks(GC_mark_range_proc marker)
|
|
{
|
|
#ifdef STACK_GROWS_DOWN
|
|
mark_range(GC_approx_sp(), GC_get_stack_base());
|
|
#else
|
|
mark_range(GC_get_stack_base(), GC_approx_sp());
|
|
#endif
|
|
}
|
|
|
|
static void default_proc(void* mutex) {}
|
|
|
|
GC_generic_mark_all_stacks_proc GC_generic_mark_all_stacks = &default_mark_all_stacks;
|
|
void* GC_generic_mutex = NULL;
|
|
GC_generic_proc GC_generic_locker = &default_proc;
|
|
GC_generic_proc GC_generic_unlocker = &default_proc;
|
|
GC_generic_proc GC_generic_stopper = &default_proc;
|
|
GC_generic_proc GC_generic_starter = &default_proc;
|
|
|
|
void GC_generic_init_threads(GC_generic_mark_all_stacks_proc mark_all_stacks,
|
|
void* mutex,
|
|
GC_generic_proc locker, GC_generic_proc unlocker,
|
|
GC_generic_proc stopper, GC_generic_proc starter)
|
|
{
|
|
GC_generic_mark_all_stacks = mark_all_stacks;
|
|
GC_generic_mutex = mutex;
|
|
GC_generic_locker = locker;
|
|
GC_generic_unlocker = unlocker;
|
|
GC_generic_stopper = stopper;
|
|
GC_generic_starter = starter;
|
|
|
|
GC_dont_expand = 1;
|
|
// GC_set_max_heap_size(20L * 1024L * 1024L);
|
|
}
|
|
|
|
#ifndef WIN32_THREADS
|
|
void GC_push_all_stacks()
|
|
{
|
|
GC_generic_mark_all_stacks(&mark_range);
|
|
}
|
|
|
|
void GC_stop_world()
|
|
{
|
|
GC_generic_stopper(GC_generic_mutex);
|
|
}
|
|
|
|
void GC_start_world()
|
|
{
|
|
GC_generic_starter(GC_generic_mutex);
|
|
}
|
|
#endif /* WIN32_THREADS */
|