NAME ^

src/memory.c - Memory allocation

DESCRIPTION ^

The memory (mem) API handles memory allocation,

Basically just a wrapper around malloc/calloc/realloc/free() with an setup function to initialize the memory pools.

Functions ^

*/

#include "parrot/parrot.h" #include "parrot/memory.h"

/* HEADERIZER HFILE: include/parrot/memory.h */

/*

FUNCDOC: mem_sys_allocate

Uses malloc to allocate system memory.

*/

PARROT_API PARROT_MALLOC PARROT_CANNOT_RETURN_NULL void * mem_sys_allocate(size_t size) { void * const ptr = malloc((size_t)size); #ifdef DETAIL_MEMORY_DEBUG fprintf(stderr, "Allocated %i at %p\n", size, ptr); #endif if (!ptr) PANIC(NULL, "Out of mem"); return ptr; }

PARROT_MALLOC PARROT_CANNOT_RETURN_NULL void * mem__internal_allocate(size_t size, NOTNULL(const char *file), int line) { void * const ptr = malloc((size_t)size); #ifdef DETAIL_MEMORY_DEBUG fprintf(stderr, "Internal malloc %i at %p (%s/%d)\n", size, ptr, file, line); #else UNUSED(file); UNUSED(line); #endif if (!ptr) PANIC(NULL, "Out of mem"); return ptr; }

/*

FUNCDOC: mem_sys_allocate_zeroed

Uses calloc to allocate system memory.

*/

PARROT_API PARROT_MALLOC PARROT_CANNOT_RETURN_NULL void * mem_sys_allocate_zeroed(size_t size) { void * const ptr = calloc(1, (size_t)size); #ifdef DETAIL_MEMORY_DEBUG fprintf(stderr, "Allocated %i at %p\n", size, ptr); #endif if (!ptr) PANIC(NULL, "Out of mem"); return ptr; }

PARROT_MALLOC PARROT_CANNOT_RETURN_NULL void * mem__internal_allocate_zeroed(size_t size, NOTNULL(const char *file), int line) { void * const ptr = calloc(1, (size_t)size); #ifdef DETAIL_MEMORY_DEBUG fprintf(stderr, "Internal malloc %i at %p (%s/%d)\n", size, ptr, file, line); #else UNUSED(file); UNUSED(line); #endif if (!ptr) PANIC(NULL, "Out of mem"); return ptr; }

/*

FUNCDOC: mem_sys_realloc

Resize a chunk of system memory.

*/

PARROT_API PARROT_MALLOC PARROT_CANNOT_RETURN_NULL void * mem__sys_realloc(NULLOK(void *from), size_t size) { void *ptr; #ifdef DETAIL_MEMORY_DEBUG fprintf(stderr, "Freed %p (realloc -- %i bytes)\n", from, size); #endif ptr = realloc(from, size); #ifdef DETAIL_MEMORY_DEBUG fprintf(stderr, "Allocated %i at %p\n", size, ptr); #endif if (!ptr) PANIC(NULL, "Out of mem"); return ptr; }

/*

FUNCDOC: mem_sys_realloc_zeroed

Resize a chunk of system memory. Fill the newly allocated space with zeroes.

*/

PARROT_API PARROT_MALLOC PARROT_CANNOT_RETURN_NULL void * mem__sys_realloc_zeroed(NULLOK(void *from), size_t size, size_t old_size) { void *ptr; #ifdef DETAIL_MEMORY_DEBUG fprintf(stderr, "Freed %p (realloc -- %i bytes)\n", from, size); #endif ptr = realloc(from, size); #ifdef DETAIL_MEMORY_DEBUG fprintf(stderr, "Allocated %i at %p\n", size, ptr); #endif if (!ptr) PANIC(NULL, "Out of mem");

    if (size > old_size)
        memset((char*)ptr + old_size, 0, size - old_size);

    return ptr;
}

PARROT_MALLOC PARROT_CANNOT_RETURN_NULL void * mem__internal_realloc(NOTNULL(void *from), size_t size, NOTNULL(const char *file), int line) { void * const ptr = realloc(from, size); #ifdef DETAIL_MEMORY_DEBUG fprintf(stderr, "internal free of %p (realloc -- %i bytes) (%s/%d)\n", from, size, file, line); fprintf(stderr, "Internal malloc %i at %p (%s/%d)\n", size, ptr, file, line); #else UNUSED(file); UNUSED(line); #endif if (!ptr) PANIC(NULL, "Out of mem"); return ptr; }

/*

FUNCDOC: mem_sys_free

Free a chunk of memory back to the system.

*/

PARROT_API void mem_sys_free(NULLOK(void *from)) { #ifdef DETAIL_MEMORY_DEBUG fprintf(stderr, "Freed %p\n", from); #endif if (from) free(from); }

void mem__internal_free(NULLOK(void *from), NOTNULL(const char *file), int line) { #ifdef DETAIL_MEMORY_DEBUG fprintf(stderr, "Internal free of %p (%s/%d)\n", from, file, line); #else UNUSED(file); UNUSED(line); #endif free(from); }

/*

FUNCDOC: mem_setup_allocator

Initializes the allocator.

*/

void mem_setup_allocator(PARROT_INTERP) { interp->arena_base = mem_allocate_zeroed_typed(Arenas); interp->arena_base->sized_header_pools = NULL;

#if PARROT_GC_MS Parrot_gc_ms_init(interp); #endif #if PARROT_GC_IMS Parrot_gc_ims_init(interp); #endif #if PARROT_GC_GMS Parrot_gc_gms_init(interp); #endif

    Parrot_initialize_memory_pools(interp);
    Parrot_initialize_header_pools(interp);
}

/* * Local variables: * c-file-style: "parrot" * End: * vim: expandtab shiftwidth=4: */


 parrot