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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-07 02:04:06 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-07 02:04:06 +0000
commit5dff2d61cc1c27747ee398e04d8e02843aabb1f8 (patch)
treea67c336b406c8227bac912beb74a1ad3cdc55100 /include/ap_config.h
parentInitial commit. (diff)
downloadapache2-5dff2d61cc1c27747ee398e04d8e02843aabb1f8.tar.xz
apache2-5dff2d61cc1c27747ee398e04d8e02843aabb1f8.zip
Adding upstream version 2.4.38.upstream/2.4.38upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @file ap_config.h
+ * @brief Symbol export macros and hook functions
+ */
+
+#ifndef AP_CONFIG_H
+#define AP_CONFIG_H
+
+#include "ap_hooks.h"
+
+/* Although this file doesn't declare any hooks, declare the exports group here */
+/**
+ * @defgroup exports Apache exports
+ * @ingroup APACHE_CORE
+ */
+
+#ifdef DOXYGEN
+/* define these just so doxygen documents them */
+
+/**
+ * AP_DECLARE_STATIC is defined when including Apache's Core headers,
+ * to provide static linkage when the dynamic library may be unavailable.
+ *
+ * @see AP_DECLARE_EXPORT
+ *
+ * AP_DECLARE_STATIC and AP_DECLARE_EXPORT are left undefined when
+ * including Apache's Core headers, to import and link the symbols from the
+ * dynamic Apache Core library and assure appropriate indirection and calling
+ * conventions at compile time.
+ */
+# define AP_DECLARE_STATIC
+/**
+ * AP_DECLARE_EXPORT is defined when building the Apache Core dynamic
+ * library, so that all public symbols are exported.
+ *
+ * @see AP_DECLARE_STATIC
+ */
+# define AP_DECLARE_EXPORT
+
+#endif /* def DOXYGEN */
+
+#if !defined(WIN32)
+/**
+ * Apache Core dso functions are declared with AP_DECLARE(), so they may
+ * use the most appropriate calling convention. Hook functions and other
+ * Core functions with variable arguments must use AP_DECLARE_NONSTD().
+ * @code
+ * AP_DECLARE(rettype) ap_func(args)
+ * @endcode
+ */
+#define AP_DECLARE(type) type
+
+/**
+ * Apache Core dso variable argument and hook functions are declared with
+ * AP_DECLARE_NONSTD(), as they must use the C language calling convention.
+ * @see AP_DECLARE
+ * @code
+ * AP_DECLARE_NONSTD(rettype) ap_func(args [...])
+ * @endcode
+ */
+#define AP_DECLARE_NONSTD(type) type
+
+/**
+ * Apache Core dso variables are declared with AP_MODULE_DECLARE_DATA.
+ * This assures the appropriate indirection is invoked at compile time.
+ *
+ * @note AP_DECLARE_DATA extern type apr_variable; syntax is required for
+ * declarations within headers to properly import the variable.
+ * @code
+ * AP_DECLARE_DATA type apr_variable
+ * @endcode
+ */
+#define AP_DECLARE_DATA
+
+#elif defined(AP_DECLARE_STATIC)
+#define AP_DECLARE(type) type __stdcall
+#define AP_DECLARE_NONSTD(type) type
+#define AP_DECLARE_DATA
+#elif defined(AP_DECLARE_EXPORT)
+#define AP_DECLARE(type) __declspec(dllexport) type __stdcall
+#define AP_DECLARE_NONSTD(type) __declspec(dllexport) type
+#define AP_DECLARE_DATA __declspec(dllexport)
+#else
+#define AP_DECLARE(type) __declspec(dllimport) type __stdcall
+#define AP_DECLARE_NONSTD(type) __declspec(dllimport) type
+#define AP_DECLARE_DATA __declspec(dllimport)
+#endif
+
+#if !defined(WIN32) || defined(AP_MODULE_DECLARE_STATIC)
+/**
+ * Declare a dso module's exported module structure as AP_MODULE_DECLARE_DATA.
+ *
+ * Unless AP_MODULE_DECLARE_STATIC is defined at compile time, symbols
+ * declared with AP_MODULE_DECLARE_DATA are always exported.
+ * @code
+ * module AP_MODULE_DECLARE_DATA mod_tag
+ * @endcode
+ */
+#if defined(WIN32)
+#define AP_MODULE_DECLARE(type) type __stdcall
+#else
+#define AP_MODULE_DECLARE(type) type
+#endif
+#define AP_MODULE_DECLARE_NONSTD(type) type
+#define AP_MODULE_DECLARE_DATA
+#else
+/**
+ * AP_MODULE_DECLARE_EXPORT is a no-op. Unless contradicted by the
+ * AP_MODULE_DECLARE_STATIC compile-time symbol, it is assumed and defined.
+ *
+ * The old SHARED_MODULE compile-time symbol is now the default behavior,
+ * so it is no longer referenced anywhere with Apache 2.0.
+ */
+#define AP_MODULE_DECLARE_EXPORT
+#define AP_MODULE_DECLARE(type) __declspec(dllexport) type __stdcall
+#define AP_MODULE_DECLARE_NONSTD(type) __declspec(dllexport) type
+#define AP_MODULE_DECLARE_DATA __declspec(dllexport)
+#endif
+
+#include "os.h"
+#if (!defined(WIN32) && !defined(NETWARE)) || defined(__MINGW32__)
+#include "ap_config_auto.h"
+#endif
+#include "ap_config_layout.h"
+
+/* Where the main/parent process's pid is logged */
+#ifndef DEFAULT_PIDLOG
+#define DEFAULT_PIDLOG DEFAULT_REL_RUNTIMEDIR "/httpd.pid"
+#endif
+
+#if defined(NETWARE)
+#define AP_NONBLOCK_WHEN_MULTI_LISTEN 1
+#endif
+
+#if defined(AP_ENABLE_DTRACE) && HAVE_SYS_SDT_H
+#include <sys/sdt.h>
+#else
+#undef _DTRACE_VERSION
+#endif
+
+#ifdef _DTRACE_VERSION
+#include "apache_probes.h"
+#else
+#include "apache_noprobes.h"
+#endif
+
+/* If APR has OTHER_CHILD logic, use reliable piped logs. */
+#if APR_HAS_OTHER_CHILD
+#define AP_HAVE_RELIABLE_PIPED_LOGS TRUE
+#endif
+
+#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
+#define AP_HAVE_C99
+#endif
+
+/* Presume that the compiler supports C99-style designated
+ * initializers if using GCC (but not G++), or for any other compiler
+ * which claims C99 support. */
+#if (defined(__GNUC__) && !defined(__cplusplus)) || defined(AP_HAVE_C99)
+#define AP_HAVE_DESIGNATED_INITIALIZER
+#endif
+
+#ifndef __has_attribute /* check for supported attributes on clang */
+#define __has_attribute(x) 0
+#endif
+#if (defined(__GNUC__) && __GNUC__ >= 4) || __has_attribute(sentinel)
+#define AP_FN_ATTR_SENTINEL __attribute__((sentinel))
+#else
+#define AP_FN_ATTR_SENTINEL
+#endif
+
+#if ( defined(__GNUC__) && \
+ (__GNUC__ >= 4 || ( __GNUC__ == 3 && __GNUC_MINOR__ >= 4))) \
+ || __has_attribute(warn_unused_result)
+#define AP_FN_ATTR_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
+#else
+#define AP_FN_ATTR_WARN_UNUSED_RESULT
+#endif
+
+#if ( defined(__GNUC__) && \
+ (__GNUC__ >= 4 && __GNUC_MINOR__ >= 3)) \
+ || __has_attribute(alloc_size)
+#define AP_FN_ATTR_ALLOC_SIZE(x) __attribute__((alloc_size(x)))
+#define AP_FN_ATTR_ALLOC_SIZE2(x,y) __attribute__((alloc_size(x,y)))
+#else
+#define AP_FN_ATTR_ALLOC_SIZE(x)
+#define AP_FN_ATTR_ALLOC_SIZE2(x,y)
+#endif
+
+#endif /* AP_CONFIG_H */