+++ /dev/null
-/*
- Simple DirectMedia Layer
- Copyright (C) 1997-2019 Sam Lantinga <slouken@libsdl.org>
-
- This software is provided 'as-is', without any express or implied
- warranty. In no event will the authors be held liable for any damages
- arising from the use of this software.
-
- Permission is granted to anyone to use this software for any purpose,
- including commercial applications, and to alter it and redistribute it
- freely, subject to the following restrictions:
-
- 1. The origin of this software must not be misrepresented; you must not
- claim that you wrote the original software. If you use this software
- in a product, an acknowledgment in the product documentation would be
- appreciated but is not required.
- 2. Altered source versions must be plainly marked as such, and must not be
- misrepresented as being the original software.
- 3. This notice may not be removed or altered from any source distribution.
-*/
-
-#ifndef SDL_assert_h_
-#define SDL_assert_h_
-
-#include "SDL_config.h"
-
-#include "begin_code.h"
-/* Set up for C function definitions, even when using C++ */
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifndef SDL_ASSERT_LEVEL
-#ifdef SDL_DEFAULT_ASSERT_LEVEL
-#define SDL_ASSERT_LEVEL SDL_DEFAULT_ASSERT_LEVEL
-#elif defined(_DEBUG) || defined(DEBUG) || \
- (defined(__GNUC__) && !defined(__OPTIMIZE__))
-#define SDL_ASSERT_LEVEL 2
-#else
-#define SDL_ASSERT_LEVEL 1
-#endif
-#endif /* SDL_ASSERT_LEVEL */
-
-/*
-These are macros and not first class functions so that the debugger breaks
-on the assertion line and not in some random guts of SDL, and so each
-assert can have unique static variables associated with it.
-*/
-
-#if defined(_MSC_VER)
-/* Don't include intrin.h here because it contains C++ code */
- extern void __cdecl __debugbreak(void);
- #define SDL_TriggerBreakpoint() __debugbreak()
-#elif ( (!defined(__NACL__)) && ((defined(__GNUC__) || defined(__clang__)) && (defined(__i386__) || defined(__x86_64__))) )
- #define SDL_TriggerBreakpoint() __asm__ __volatile__ ( "int $3\n\t" )
-#elif defined(__386__) && defined(__WATCOMC__)
- #define SDL_TriggerBreakpoint() { _asm { int 0x03 } }
-#elif defined(HAVE_SIGNAL_H) && !defined(__WATCOMC__)
- #include <signal.h>
- #define SDL_TriggerBreakpoint() raise(SIGTRAP)
-#else
- /* How do we trigger breakpoints on this platform? */
- #define SDL_TriggerBreakpoint()
-#endif
-
-#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 supports __func__ as a standard. */
-# define SDL_FUNCTION __func__
-#elif ((__GNUC__ >= 2) || defined(_MSC_VER) || defined (__WATCOMC__))
-# define SDL_FUNCTION __FUNCTION__
-#else
-# define SDL_FUNCTION "???"
-#endif
-#define SDL_FILE __FILE__
-#define SDL_LINE __LINE__
-
-/*
-sizeof (x) makes the compiler still parse the expression even without
-assertions enabled, so the code is always checked at compile time, but
-doesn't actually generate code for it, so there are no side effects or
-expensive checks at run time, just the constant size of what x WOULD be,
-which presumably gets optimized out as unused.
-This also solves the problem of...
-
- int somevalue = blah();
- SDL_assert(somevalue == 1);
-
-...which would cause compiles to complain that somevalue is unused if we
-disable assertions.
-*/
-
-/* "while (0,0)" fools Microsoft's compiler's /W4 warning level into thinking
- this condition isn't constant. And looks like an owl's face! */
-#ifdef _MSC_VER /* stupid /W4 warnings. */
-#define SDL_NULL_WHILE_LOOP_CONDITION (0,0)
-#else
-#define SDL_NULL_WHILE_LOOP_CONDITION (0)
-#endif
-
-#define SDL_disabled_assert(condition) \
- do { (void) sizeof ((condition)); } while (SDL_NULL_WHILE_LOOP_CONDITION)
-
-typedef enum
-{
- SDL_ASSERTION_RETRY, /**< Retry the assert immediately. */
- SDL_ASSERTION_BREAK, /**< Make the debugger trigger a breakpoint. */
- SDL_ASSERTION_ABORT, /**< Terminate the program. */
- SDL_ASSERTION_IGNORE, /**< Ignore the assert. */
- SDL_ASSERTION_ALWAYS_IGNORE /**< Ignore the assert from now on. */
-} SDL_AssertState;
-
-typedef struct SDL_AssertData
-{
- int always_ignore;
- unsigned int trigger_count;
- const char *condition;
- const char *filename;
- int linenum;
- const char *function;
- const struct SDL_AssertData *next;
-} SDL_AssertData;
-
-#if (SDL_ASSERT_LEVEL > 0)
-
-/* Never call this directly. Use the SDL_assert* macros. */
-extern DECLSPEC SDL_AssertState SDLCALL SDL_ReportAssertion(SDL_AssertData *,
- const char *,
- const char *, int)
-#if defined(__clang__)
-#if __has_feature(attribute_analyzer_noreturn)
-/* this tells Clang's static analysis that we're a custom assert function,
- and that the analyzer should assume the condition was always true past this
- SDL_assert test. */
- __attribute__((analyzer_noreturn))
-#endif
-#endif
-;
-
-/* the do {} while(0) avoids dangling else problems:
- if (x) SDL_assert(y); else blah();
- ... without the do/while, the "else" could attach to this macro's "if".
- We try to handle just the minimum we need here in a macro...the loop,
- the static vars, and break points. The heavy lifting is handled in
- SDL_ReportAssertion(), in SDL_assert.c.
-*/
-#define SDL_enabled_assert(condition) \
- do { \
- while ( !(condition) ) { \
- static struct SDL_AssertData sdl_assert_data = { \
- 0, 0, #condition, 0, 0, 0, 0 \
- }; \
- const SDL_AssertState sdl_assert_state = SDL_ReportAssertion(&sdl_assert_data, SDL_FUNCTION, SDL_FILE, SDL_LINE); \
- if (sdl_assert_state == SDL_ASSERTION_RETRY) { \
- continue; /* go again. */ \
- } else if (sdl_assert_state == SDL_ASSERTION_BREAK) { \
- SDL_TriggerBreakpoint(); \
- } \
- break; /* not retrying. */ \
- } \
- } while (SDL_NULL_WHILE_LOOP_CONDITION)
-
-#endif /* enabled assertions support code */
-
-/* Enable various levels of assertions. */
-#if SDL_ASSERT_LEVEL == 0 /* assertions disabled */
-# define SDL_assert(condition) SDL_disabled_assert(condition)
-# define SDL_assert_release(condition) SDL_disabled_assert(condition)
-# define SDL_assert_paranoid(condition) SDL_disabled_assert(condition)
-#elif SDL_ASSERT_LEVEL == 1 /* release settings. */
-# define SDL_assert(condition) SDL_disabled_assert(condition)
-# define SDL_assert_release(condition) SDL_enabled_assert(condition)
-# define SDL_assert_paranoid(condition) SDL_disabled_assert(condition)
-#elif SDL_ASSERT_LEVEL == 2 /* normal settings. */
-# define SDL_assert(condition) SDL_enabled_assert(condition)
-# define SDL_assert_release(condition) SDL_enabled_assert(condition)
-# define SDL_assert_paranoid(condition) SDL_disabled_assert(condition)
-#elif SDL_ASSERT_LEVEL == 3 /* paranoid settings. */
-# define SDL_assert(condition) SDL_enabled_assert(condition)
-# define SDL_assert_release(condition) SDL_enabled_assert(condition)
-# define SDL_assert_paranoid(condition) SDL_enabled_assert(condition)
-#else
-# error Unknown assertion level.
-#endif
-
-/* this assertion is never disabled at any level. */
-#define SDL_assert_always(condition) SDL_enabled_assert(condition)
-
-
-typedef SDL_AssertState (SDLCALL *SDL_AssertionHandler)(
- const SDL_AssertData* data, void* userdata);
-
-/**
- * \brief Set an application-defined assertion handler.
- *
- * This allows an app to show its own assertion UI and/or force the
- * response to an assertion failure. If the app doesn't provide this, SDL
- * will try to do the right thing, popping up a system-specific GUI dialog,
- * and probably minimizing any fullscreen windows.
- *
- * This callback may fire from any thread, but it runs wrapped in a mutex, so
- * it will only fire from one thread at a time.
- *
- * Setting the callback to NULL restores SDL's original internal handler.
- *
- * This callback is NOT reset to SDL's internal handler upon SDL_Quit()!
- *
- * Return SDL_AssertState value of how to handle the assertion failure.
- *
- * \param handler Callback function, called when an assertion fails.
- * \param userdata A pointer passed to the callback as-is.
- */
-extern DECLSPEC void SDLCALL SDL_SetAssertionHandler(
- SDL_AssertionHandler handler,
- void *userdata);
-
-/**
- * \brief Get the default assertion handler.
- *
- * This returns the function pointer that is called by default when an
- * assertion is triggered. This is an internal function provided by SDL,
- * that is used for assertions when SDL_SetAssertionHandler() hasn't been
- * used to provide a different function.
- *
- * \return The default SDL_AssertionHandler that is called when an assert triggers.
- */
-extern DECLSPEC SDL_AssertionHandler SDLCALL SDL_GetDefaultAssertionHandler(void);
-
-/**
- * \brief Get the current assertion handler.
- *
- * This returns the function pointer that is called when an assertion is
- * triggered. This is either the value last passed to
- * SDL_SetAssertionHandler(), or if no application-specified function is
- * set, is equivalent to calling SDL_GetDefaultAssertionHandler().
- *
- * \param puserdata Pointer to a void*, which will store the "userdata"
- * pointer that was passed to SDL_SetAssertionHandler().
- * This value will always be NULL for the default handler.
- * If you don't care about this data, it is safe to pass
- * a NULL pointer to this function to ignore it.
- * \return The SDL_AssertionHandler that is called when an assert triggers.
- */
-extern DECLSPEC SDL_AssertionHandler SDLCALL SDL_GetAssertionHandler(void **puserdata);
-
-/**
- * \brief Get a list of all assertion failures.
- *
- * Get all assertions triggered since last call to SDL_ResetAssertionReport(),
- * or the start of the program.
- *
- * The proper way to examine this data looks something like this:
- *
- * <code>
- * const SDL_AssertData *item = SDL_GetAssertionReport();
- * while (item) {
- * printf("'%s', %s (%s:%d), triggered %u times, always ignore: %s.\\n",
- * item->condition, item->function, item->filename,
- * item->linenum, item->trigger_count,
- * item->always_ignore ? "yes" : "no");
- * item = item->next;
- * }
- * </code>
- *
- * \return List of all assertions.
- * \sa SDL_ResetAssertionReport
- */
-extern DECLSPEC const SDL_AssertData * SDLCALL SDL_GetAssertionReport(void);
-
-/**
- * \brief Reset the list of all assertion failures.
- *
- * Reset list of all assertions triggered.
- *
- * \sa SDL_GetAssertionReport
- */
-extern DECLSPEC void SDLCALL SDL_ResetAssertionReport(void);
-
-
-/* these had wrong naming conventions until 2.0.4. Please update your app! */
-#define SDL_assert_state SDL_AssertState
-#define SDL_assert_data SDL_AssertData
-
-
-/* Ends C function definitions when using C++ */
-#ifdef __cplusplus
-}
-#endif
-#include "close_code.h"
-
-#endif /* SDL_assert_h_ */
-
-/* vi: set ts=4 sw=4 expandtab: */
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