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#ifndef PHP_AWS_CRT_H
#define PHP_AWS_CRT_H
/**
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "php.h"
#include "Zend/zend_extensions.h" /* for ZEND_EXTENSION_API_NO */
#include <aws/common/common.h>
#include <aws/common/mutex.h>
#include <aws/common/promise.h>
#include <aws/common/thread.h>
/* ZEND_EXTENSION_API_NO from each branch of the PHP source */
#define AWS_PHP_EXTENSION_API_5_5 220121212
#define AWS_PHP_EXTENSION_API_5_6 220131226
#define AWS_PHP_EXTENSION_API_7_0 320151012
#define AWS_PHP_EXTENSION_API_7_1 320160303
#define AWS_PHP_EXTENSION_API_7_2 320170718
#define AWS_PHP_EXTENSION_API_7_3 320180731
#define AWS_PHP_EXTENSION_API_7_4 320190902
#define AWS_PHP_EXTENSION_API_8_0 420200930
#if ZEND_EXTENSION_API_NO < AWS_PHP_EXTENSION_API_5_5
# error "PHP >= 5.5 is required"
#endif
#define AWS_PHP_AT_LEAST_7 (ZEND_EXTENSION_API_NO >= AWS_PHP_EXTENSION_API_7_0)
#define AWS_PHP_AT_LEAST_7_2 (ZEND_EXTENSION_API_NO >= AWS_PHP_EXTENSION_API_7_2)
ZEND_BEGIN_MODULE_GLOBALS(awscrt)
long log_level;
ZEND_END_MODULE_GLOBALS(awscrt)
ZEND_EXTERN_MODULE_GLOBALS(awscrt)
#define AWSCRT_GLOBAL(v) ZEND_MODULE_GLOBALS_ACCESSOR(awscrt, v)
#if AWS_PHP_AT_LEAST_7
/* PHP 7 takes a zval*, PHP5 takes a zval** */
# define AWS_PHP_STREAM_FROM_ZVAL(s, z) php_stream_from_zval(s, z)
#define XRETURN_STRINGL RETURN_STRINGL
#define XRETURN_STRING RETURN_STRING
#define XRETVAL_STRINGL RETVAL_STRINGL
#define XRETVAL_STRING RETVAL_STRING
#else /* PHP 5.5-5.6 */
# define AWS_PHP_STREAM_FROM_ZVAL(s, z) php_stream_from_zval(s, &z)
#define XRETURN_STRINGL(s, l) RETURN_STRINGL(s, l, 1)
#define XRETURN_STRING(s) RETURN_STRING(s, 1)
#define XRETVAL_STRINGL(s, l) RETVAL_STRINGL(s, l, 1)
#define XRETVAL_STRING(s) RETVAL_STRING(s, 1)
#endif /* PHP 5.x */
#include "api.h"
#include "awscrt_arginfo.h"
/* Utility macros borrowed from common */
#define GLUE(x, y) x y
#define RETURN_ARG_COUNT(_1_, _2_, _3_, _4_, _5_, count, ...) count
#define EXPAND_ARGS(args) RETURN_ARG_COUNT args
#define COUNT_ARGS_MAX5(...) EXPAND_ARGS((__VA_ARGS__, 5, 4, 3, 2, 1, 0))
#define OVERLOAD_MACRO2(name, count) name##count
#define OVERLOAD_MACRO1(name, count) OVERLOAD_MACRO2(name, count)
#define OVERLOAD_MACRO(name, count) OVERLOAD_MACRO1(name, count)
#define CALL_OVERLOAD(name, ...) GLUE(OVERLOAD_MACRO(name, COUNT_ARGS_MAX5(__VA_ARGS__)), (__VA_ARGS__))
#define VARIABLE_LENGTH_ARRAY(type, name, length) type *name = alloca(sizeof(type) * (length))
/*
* PHP utility APIs for this extension
*/
/*
* Exception throwing mechanism, will never return
*/
#define aws_php_throw_exception(...) CALL_OVERLOAD(_AWS_PHP_THROW_EXCEPTION, __VA_ARGS__);
#define _AWS_PHP_THROW_EXCEPTION5(format, ...) zend_error_noreturn(E_ERROR, format, __VA_ARGS__)
#define _AWS_PHP_THROW_EXCEPTION4(format, ...) zend_error_noreturn(E_ERROR, format, __VA_ARGS__)
#define _AWS_PHP_THROW_EXCEPTION3(format, ...) zend_error_noreturn(E_ERROR, format, __VA_ARGS__)
#define _AWS_PHP_THROW_EXCEPTION2(format, ...) zend_error_noreturn(E_ERROR, format, __VA_ARGS__)
#define _AWS_PHP_THROW_EXCEPTION1(format) zend_error_noreturn(E_ERROR, format)
/**
* throws an exception resulting from argument parsing, notes the current function name in the exception
*/
#define aws_php_argparse_fail() \
do { \
aws_php_throw_exception("Failed to parse arguments to %s", __func__); \
} while (0)
/**
* calls zend_parse_parameters() with the arguments and throws an exception if parsing fails
*/
#define aws_php_parse_parameters(type_spec, ...) \
do { \
if (zend_parse_parameters(ZEND_NUM_ARGS(), type_spec, __VA_ARGS__) == FAILURE) { \
aws_php_argparse_fail(); \
} \
} while (0)
/**
* calls zend_parse_parameters_none() and throws an exception if parsing fails
*/
#define aws_php_parse_parameters_none() \
do { \
if (zend_parse_parameters_none() == FAILURE) { \
aws_php_argparse_fail(); \
} \
} while (0)
/* PHP/Zend utility functions to work across PHP versions */
zval *aws_php_zval_new(void);
void aws_php_zval_dtor(void *zval_ptr);
bool aws_php_zval_as_bool(zval *z);
void aws_php_zval_copy(zval *dest, zval *src);
/**
* Replacement for ZVAL_STRINGL that is PHP version agnostic
*/
void aws_php_zval_stringl(zval *val, const char *str, size_t len);
/* Thread queue functions for managing PHP's optional threading situation */
typedef struct _aws_php_task {
void (*callback)(void *); /* task function */
void (*dtor)(void *); /* deletes task_data, if non-null */
void *data;
} aws_php_task;
/* maximum number of queued callbacks to execute at once. Since this is to support single-threaded usage,
* this can be a fairly small number, as how many callbacks could we reasonably be stacking up?! */
#define AWS_PHP_THREAD_QUEUE_MAX_DEPTH 32
typedef struct _aws_php_thread_queue {
struct aws_mutex mutex;
aws_php_task queue[AWS_PHP_THREAD_QUEUE_MAX_DEPTH];
size_t write_slot;
aws_thread_id_t thread_id;
} aws_php_thread_queue;
extern aws_php_thread_queue s_aws_php_main_thread_queue;
bool aws_php_is_main_thread(void);
void aws_php_thread_queue_init(aws_php_thread_queue *queue);
void aws_php_thread_queue_clean_up(aws_php_thread_queue *queue);
void aws_php_thread_queue_push(aws_php_thread_queue *queue, aws_php_task task);
bool aws_php_thread_queue_drain(aws_php_thread_queue *queue);
/* called from worker thread to wait for the main thread to execute any queued work in PHP */
void aws_php_thread_queue_yield(aws_php_thread_queue *queue);
/* called from PHP thread to wait on async queued jobs, one of which MUST complete the promise */
void aws_php_thread_queue_wait(aws_php_thread_queue *queue, struct aws_promise *promise);
/**
* generic dispatch mechanism to call a callback provided as a zval with arguments
* that are converted to zvals based on the arg_types format string
* Uses the same format string as zend_parse_parameters
*/
zval aws_php_invoke_callback(zval *callback, const char *arg_types, ...);
#endif /* PHP_AWS_CRT_H */
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