duktape-1.5.2/src-separate/duk_api_memory.c

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/*
 *  Memory calls.
 */
 
#include "duk_internal.h"
 
DUK_EXTERNAL void *duk_alloc_raw(duk_context *ctx, duk_size_t size) {
    duk_hthread *thr = (duk_hthread *) ctx;
 
    DUK_ASSERT_CTX_VALID(ctx);
 
    return DUK_ALLOC_RAW(thr->heap, size);
}
 
DUK_EXTERNAL void duk_free_raw(duk_context *ctx, void *ptr) {
    duk_hthread *thr = (duk_hthread *) ctx;
 
    DUK_ASSERT_CTX_VALID(ctx);
 
    DUK_FREE_RAW(thr->heap, ptr);
}
 
DUK_EXTERNAL void *duk_realloc_raw(duk_context *ctx, void *ptr, duk_size_t size) {
    duk_hthread *thr = (duk_hthread *) ctx;
 
    DUK_ASSERT_CTX_VALID(ctx);
 
    return DUK_REALLOC_RAW(thr->heap, ptr, size);
}
 
DUK_EXTERNAL void *duk_alloc(duk_context *ctx, duk_size_t size) {
    duk_hthread *thr = (duk_hthread *) ctx;
 
    DUK_ASSERT_CTX_VALID(ctx);
 
    return DUK_ALLOC(thr->heap, size);
}
 
DUK_EXTERNAL void duk_free(duk_context *ctx, void *ptr) {
    duk_hthread *thr = (duk_hthread *) ctx;
 
    DUK_ASSERT_CTX_VALID(ctx);
 
    DUK_FREE(thr->heap, ptr);
}
 
DUK_EXTERNAL void *duk_realloc(duk_context *ctx, void *ptr, duk_size_t size) {
    duk_hthread *thr = (duk_hthread *) ctx;
 
    DUK_ASSERT_CTX_VALID(ctx);
 
    /*
     *  Note: since this is an exposed API call, there should be
     *  no way a mark-and-sweep could have a side effect on the
     *  memory allocation behind 'ptr'; the pointer should never
     *  be something that Duktape wants to change.
     *
     *  Thus, no need to use DUK_REALLOC_INDIRECT (and we don't
     *  have the storage location here anyway).
     */
 
    return DUK_REALLOC(thr->heap, ptr, size);
}
 
DUK_EXTERNAL void duk_get_memory_functions(duk_context *ctx, duk_memory_functions *out_funcs) {
    duk_hthread *thr = (duk_hthread *) ctx;
    duk_heap *heap;
 
    DUK_ASSERT_CTX_VALID(ctx);
    DUK_ASSERT(out_funcs != NULL);
    DUK_ASSERT(thr != NULL);
    DUK_ASSERT(thr->heap != NULL);
 
    heap = thr->heap;
    out_funcs->alloc_func = heap->alloc_func;
    out_funcs->realloc_func = heap->realloc_func;
    out_funcs->free_func = heap->free_func;
    out_funcs->udata = heap->heap_udata;
}
 
DUK_EXTERNAL void duk_gc(duk_context *ctx, duk_uint_t flags) {
#ifdef DUK_USE_MARK_AND_SWEEP
    duk_hthread *thr = (duk_hthread *) ctx;
    duk_heap *heap;
 
    DUK_UNREF(flags);
 
    /* NULL accepted */
    if (!ctx) {
        return;
    }
    DUK_ASSERT_CTX_VALID(ctx);
    heap = thr->heap;
    DUK_ASSERT(heap != NULL);
 
    DUK_D(DUK_DPRINT("mark-and-sweep requested by application"));
    duk_heap_mark_and_sweep(heap, 0);
#else
    DUK_D(DUK_DPRINT("mark-and-sweep requested by application but mark-and-sweep not enabled, ignoring"));
    DUK_UNREF(ctx);
    DUK_UNREF(flags);
#endif
}