diff options
Diffstat (limited to '')
| -rw-r--r-- | src/civetweb/src/third_party/duktape-1.5.2/src-separate/duk_hthread_alloc.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/src/civetweb/src/third_party/duktape-1.5.2/src-separate/duk_hthread_alloc.c b/src/civetweb/src/third_party/duktape-1.5.2/src-separate/duk_hthread_alloc.c new file mode 100644 index 000000000..32857ef3e --- /dev/null +++ b/src/civetweb/src/third_party/duktape-1.5.2/src-separate/duk_hthread_alloc.c @@ -0,0 +1,95 @@ +/* + * duk_hthread allocation and freeing. + */ + +#include "duk_internal.h" + +/* + * Allocate initial stacks for a thread. Note that 'thr' must be reachable + * as a garbage collection may be triggered by the allocation attempts. + * Returns zero (without leaking memory) if init fails. + */ + +DUK_INTERNAL duk_bool_t duk_hthread_init_stacks(duk_heap *heap, duk_hthread *thr) { + duk_size_t alloc_size; + duk_size_t i; + + DUK_ASSERT(heap != NULL); + DUK_ASSERT(thr != NULL); + DUK_ASSERT(thr->valstack == NULL); + DUK_ASSERT(thr->valstack_end == NULL); + DUK_ASSERT(thr->valstack_bottom == NULL); + DUK_ASSERT(thr->valstack_top == NULL); + DUK_ASSERT(thr->callstack == NULL); + DUK_ASSERT(thr->catchstack == NULL); + + /* valstack */ + alloc_size = sizeof(duk_tval) * DUK_VALSTACK_INITIAL_SIZE; + thr->valstack = (duk_tval *) DUK_ALLOC(heap, alloc_size); + if (!thr->valstack) { + goto fail; + } + DUK_MEMZERO(thr->valstack, alloc_size); + thr->valstack_end = thr->valstack + DUK_VALSTACK_INITIAL_SIZE; +#if !defined(DUK_USE_PREFER_SIZE) + thr->valstack_size = DUK_VALSTACK_INITIAL_SIZE; +#endif + thr->valstack_bottom = thr->valstack; + thr->valstack_top = thr->valstack; + + for (i = 0; i < DUK_VALSTACK_INITIAL_SIZE; i++) { + DUK_TVAL_SET_UNDEFINED(&thr->valstack[i]); + } + + /* callstack */ + alloc_size = sizeof(duk_activation) * DUK_CALLSTACK_INITIAL_SIZE; + thr->callstack = (duk_activation *) DUK_ALLOC(heap, alloc_size); + if (!thr->callstack) { + goto fail; + } + DUK_MEMZERO(thr->callstack, alloc_size); + thr->callstack_size = DUK_CALLSTACK_INITIAL_SIZE; + DUK_ASSERT(thr->callstack_top == 0); + + /* catchstack */ + alloc_size = sizeof(duk_catcher) * DUK_CATCHSTACK_INITIAL_SIZE; + thr->catchstack = (duk_catcher *) DUK_ALLOC(heap, alloc_size); + if (!thr->catchstack) { + goto fail; + } + DUK_MEMZERO(thr->catchstack, alloc_size); + thr->catchstack_size = DUK_CATCHSTACK_INITIAL_SIZE; + DUK_ASSERT(thr->catchstack_top == 0); + + return 1; + + fail: + DUK_FREE(heap, thr->valstack); + DUK_FREE(heap, thr->callstack); + DUK_FREE(heap, thr->catchstack); + + thr->valstack = NULL; + thr->callstack = NULL; + thr->catchstack = NULL; + return 0; +} + +/* For indirect allocs. */ + +DUK_INTERNAL void *duk_hthread_get_valstack_ptr(duk_heap *heap, void *ud) { + duk_hthread *thr = (duk_hthread *) ud; + DUK_UNREF(heap); + return (void *) thr->valstack; +} + +DUK_INTERNAL void *duk_hthread_get_callstack_ptr(duk_heap *heap, void *ud) { + duk_hthread *thr = (duk_hthread *) ud; + DUK_UNREF(heap); + return (void *) thr->callstack; +} + +DUK_INTERNAL void *duk_hthread_get_catchstack_ptr(duk_heap *heap, void *ud) { + duk_hthread *thr = (duk_hthread *) ud; + DUK_UNREF(heap); + return (void *) thr->catchstack; +} |