memory.c

/**
 * The OpenCL PHP extension
 *
 * @package     php-opencl
 * @author      Ryusuke SEKIYAMA <rsky0711@gmail.com>
 * @copyright   2012 Ryusuke SEKIYAMA
 * @license     http://www.opensource.org/licenses/mit-license.php  MIT License
 */

#include "memory.h"
#include "params.h"

#define get_info ((phpcl_get_info_func_t)_get_mem_object_info)
#define get_info_ex NULL
#define get_image_info ((phpcl_get_info_func_t)_get_image_info)
#define get_image_info_ex NULL

/* {{{ globals */

static const phpcl_info_param_t mem_info_params[] = {
	{ NULL, 0 }
};

/* }}} */
/* {{{ _get_mem_object_info() */

static cl_int _get_mem_object_info(cl_mem memobj,
                                   void *reserved __attribute__ ((unused)),
                                   cl_mem_info name,
                                   size_t value_size,
                                   void *value,
                                   size_t *value_size_ret)
{
	return clGetMemObjectInfo(memobj, name, value_size, value, value_size_ret);
}

/* }}} */
/* {{{ _get_mem_object_info_all() */

static void _get_mem_object_info_all(
	INTERNAL_FUNCTION_PARAMETERS,
	cl_mem memobj)
{
	const phpcl_info_param_t *param = mem_info_params;
	char buf[32] = {0};

	array_init_size(return_value, 8);
	snprintf(buf, sizeof(buf), "%p", memobj);
	add_assoc_string(return_value, "id", buf, 1);

	while (param->key != NULL) {
		zval *entry = phpcl_get_info(get_info, get_info_ex,
		                             memobj, NULL, param TSRMLS_CC);
		if (entry) {
			add_assoc_zval(return_value, param->key, entry);
		} else {
			add_assoc_null(return_value, param->key);
		}
		param++;
	}
}

/* }}} */
/* {{{ _get_mem_object_info_by_name() */

static void _get_mem_object_info_by_name(
	INTERNAL_FUNCTION_PARAMETERS,
	cl_mem memobj, cl_int name)
{
	const phpcl_info_param_t *param = mem_info_params;

	RETVAL_NULL();

	while (param->key != NULL) {
		if (param->name == name) {
			zval *entry = phpcl_get_info(get_info, get_info_ex,
			                             memobj, NULL, param TSRMLS_CC);
			if (entry) {
				RETVAL_ZVAL(entry, 0, 1);
			}
			return;
		}
		param++;
	}
}

/* }}} */
/* {{{ mixed cl_get_mem_object_info(resource cl_mem memobj[, int name]) */

PHPCL_FUNCTION(cl_get_mem_object_info)
{
	zval *zid = NULL;
	phpcl_memobj_t *mem = NULL;
	long name = 0;

	RETVAL_FALSE;

	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC,
	                          "r|l", &zid, &name) == FAILURE) {
		return;
	}
	ZEND_FETCH_RESOURCE(mem, phpcl_memobj_t *, &zid, -1,
	                    "cl_mem", phpcl_le_mem());

	if (ZEND_NUM_ARGS() == 2) {
		_get_mem_object_info_by_name(INTERNAL_FUNCTION_PARAM_PASSTHRU, mem->memobj, (cl_int)name);
	} else {
		_get_mem_object_info_all(INTERNAL_FUNCTION_PARAM_PASSTHRU, mem->memobj);
	}
}

/* }}} */
/* {{{ _check_mem_flags() */

static void _check_mem_flags(long *flags_arg TSRMLS_DC)
{
	cl_mem_flags flags = (cl_mem_flags)(*flags_arg);
	if (flags & CL_MEM_USE_HOST_PTR) {
		php_error_docref(NULL TSRMLS_CC, E_WARNING,
			"CL_MEM_USE_HOST_PTR flag is not yet supported.");
	}
	if (flags & CL_MEM_ALLOC_HOST_PTR) {
		php_error_docref(NULL TSRMLS_CC, E_WARNING,
			"CL_MEM_ALLOC_HOST_PTR flag is not yet supported.");
	}
	if (flags & CL_MEM_COPY_HOST_PTR) {
		php_error_docref(NULL TSRMLS_CC, E_WARNING,
			"CL_MEM_COPY_HOST_PTR flag is not yet supported.");
	}
	flags = flags & (CL_MEM_READ_WRITE | CL_MEM_WRITE_ONLY | CL_MEM_READ_ONLY);
	*flags_arg = (long)flags;
}

/* }}} */
/* {{{ resource cl_mem cl_create_buffer(resource cl_context context, int flags, int size) */

PHPCL_FUNCTION(cl_create_buffer)
{
	cl_int errcode = CL_SUCCESS;
	zval *zcontext = NULL;
	phpcl_context_t *ctx = NULL;
	long flags = 0;
	long size = 0;
	void *host_ptr = NULL;
	cl_mem memobj = NULL;

	RETVAL_FALSE;

	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC,
	                          "rll", &zcontext, &flags, &size) == FAILURE) {
		return;
	}
	ZEND_FETCH_RESOURCE(ctx, phpcl_context_t *, &zcontext, -1,
	                    "cl_context", phpcl_le_context());

	_check_mem_flags(&flags TSRMLS_CC);

	memobj = clCreateBuffer(ctx->context, (cl_mem_flags)flags, (size_t)size,
	                        host_ptr, &errcode);
	if (memobj) {
		phpcl_memobj_t *mem = emalloc(sizeof(phpcl_memobj_t));
		mem->memobj = memobj;
		mem->ptr = host_ptr;
		ZEND_REGISTER_RESOURCE(return_value, mem, phpcl_le_mem());
	}
}

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * End:
 * vim600: noet sw=4 ts=4 fdm=marker
 * vim<600: noet sw=4 ts=4
 */