PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
- by the Free Software Foundation; either version 2 of the License,
+ by the Free Software Foundation; either version 2.1 of the License,
or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
-
-#include <pulsecore/log.h>
-#include <pulse/gccmacro.h>
+#include <string.h>
+#include <stdbool.h>
#ifndef PACKAGE
#error "Please include config.h before including this file!"
#ifndef PA_LIKELY
#ifdef __GNUC__
#define PA_LIKELY(x) (__builtin_expect(!!(x),1))
-#define PA_UNLIKELY(x) (__builtin_expect((x),0))
+#define PA_UNLIKELY(x) (__builtin_expect(!!(x),0))
#else
#define PA_LIKELY(x) (x)
#define PA_UNLIKELY(x) (x)
#define PA_PAGE_SIZE ((size_t) 4096)
#endif
-static inline size_t pa_align(size_t l) {
- return (((l + sizeof(void*) - 1) / sizeof(void*)) * sizeof(void*));
+/* Rounds down */
+static inline void* PA_ALIGN_PTR(const void *p) {
+ return (void*) (((size_t) p) & ~(sizeof(void*) - 1));
}
-#define PA_ALIGN(x) (pa_align(x))
-static inline void* pa_page_align_ptr(const void *p) {
- return (void*) (((size_t) p) & ~(PA_PAGE_SIZE-1));
+/* Rounds up */
+static inline size_t PA_ALIGN(size_t l) {
+ return ((l + sizeof(void*) - 1) & ~(sizeof(void*) - 1));
}
-#define PA_PAGE_ALIGN_PTR(x) (pa_page_align_ptr(x))
-static inline size_t pa_page_align(size_t l) {
- return l & ~(PA_PAGE_SIZE-1);
+/* Rounds down */
+static inline void* PA_PAGE_ALIGN_PTR(const void *p) {
+ return (void*) (((size_t) p) & ~(PA_PAGE_SIZE - 1));
+}
+
+/* Rounds up */
+static inline size_t PA_PAGE_ALIGN(size_t l) {
+ return (l + PA_PAGE_SIZE - 1) & ~(PA_PAGE_SIZE - 1);
}
-#define PA_PAGE_ALIGN(x) (pa_page_align(x))
#define PA_ELEMENTSOF(x) (sizeof(x)/sizeof((x)[0]))
-/* The users of PA_MIN and PA_MAX should be aware that these macros on
- * non-GCC executed code with side effects twice. It is thus
- * considered misuse to use code with side effects as arguments to MIN
- * and MAX. */
+#if defined(__GNUC__)
+ #define PA_DECLARE_ALIGNED(n,t,v) t v __attribute__ ((aligned (n)))
+#else
+ #define PA_DECLARE_ALIGNED(n,t,v) t v
+#endif
+
+#ifdef __GNUC__
+#define typeof __typeof__
+#endif
+
+/* The users of PA_MIN and PA_MAX, PA_CLAMP, PA_ROUND_UP should be
+ * aware that these macros on non-GCC executed code with side effects
+ * twice. It is thus considered misuse to use code with side effects
+ * as arguments to MIN and MAX. */
#ifdef __GNUC__
#define PA_MAX(a,b) \
- __extension__ ({ typeof(a) _a = (a); \
+ __extension__ ({ \
+ typeof(a) _a = (a); \
typeof(b) _b = (b); \
_a > _b ? _a : _b; \
})
#ifdef __GNUC__
#define PA_MIN(a,b) \
- __extension__ ({ typeof(a) _a = (a); \
+ __extension__ ({ \
+ typeof(a) _a = (a); \
typeof(b) _b = (b); \
_a < _b ? _a : _b; \
})
#ifdef __GNUC__
#define PA_CLAMP(x, low, high) \
- __extension__ ({ typeof(x) _x = (x); \
+ __extension__ ({ \
+ typeof(x) _x = (x); \
typeof(low) _low = (low); \
typeof(high) _high = (high); \
((_x > _high) ? _high : ((_x < _low) ? _low : _x)); \
#ifdef __GNUC__
#define PA_CLAMP_UNLIKELY(x, low, high) \
- __extension__ ({ typeof(x) _x = (x); \
+ __extension__ ({ \
+ typeof(x) _x = (x); \
typeof(low) _low = (low); \
typeof(high) _high = (high); \
(PA_UNLIKELY(_x > _high) ? _high : (PA_UNLIKELY(_x < _low) ? _low : _x)); \
* make sense: we cannot know if it is more likely that the values is
* lower or greater than the boundaries.*/
-/* This type is not intended to be used in exported APIs! Use classic "int" there! */
-#ifdef HAVE_STD_BOOL
-typedef _Bool pa_bool_t;
+#ifdef __GNUC__
+#define PA_ROUND_UP(a, b) \
+ __extension__ ({ \
+ typeof(a) _a = (a); \
+ typeof(b) _b = (b); \
+ ((_a + _b - 1) / _b) * _b; \
+ })
#else
-typedef int pa_bool_t;
+#define PA_ROUND_UP(a, b) ((((a) + (b) - 1) / (b)) * (b))
#endif
-#ifndef FALSE
-#define FALSE ((pa_bool_t) 0)
+#ifdef __GNUC__
+#define PA_ROUND_DOWN(a, b) \
+ __extension__ ({ \
+ typeof(a) _a = (a); \
+ typeof(b) _b = (b); \
+ (_a / _b) * _b; \
+ })
+#else
+#define PA_ROUND_DOWN(a, b) (((a) / (b)) * (b))
#endif
-#ifndef TRUE
-#define TRUE (!FALSE)
+#ifdef __GNUC__
+#define PA_CLIP_SUB(a, b) \
+ __extension__ ({ \
+ typeof(a) _a = (a); \
+ typeof(b) _b = (b); \
+ _a > _b ? _a - _b : 0; \
+ })
+#else
+#define PA_CLIP_SUB(a, b) ((a) > (b) ? (a) - (b) : 0)
#endif
#ifdef __GNUC__
pa_log_debug("Assertion '%s' failed at %s:%u, function %s.\n", #expr , __FILE__, __LINE__, PA_PRETTY_FUNCTION); \
return; \
} \
- } while(FALSE)
+ } while(false)
#define pa_return_val_if_fail(expr, val) \
do { \
pa_log_debug("Assertion '%s' failed at %s:%u, function %s.\n", #expr , __FILE__, __LINE__, PA_PRETTY_FUNCTION); \
return (val); \
} \
- } while(FALSE)
+ } while(false)
#define pa_return_null_if_fail(expr) pa_return_val_if_fail(expr, NULL)
-/* An assert which guarantees side effects of x, i.e. is never
- * optimized away */
+/* pa_assert_se() is an assert which guarantees side effects of x,
+ * i.e. is never optimized away, regardless of NDEBUG or FASTPATH. */
#define pa_assert_se(expr) \
do { \
if (PA_UNLIKELY(!(expr))) { \
pa_log_error("Assertion '%s' failed at %s:%u, function %s(). Aborting.", #expr , __FILE__, __LINE__, PA_PRETTY_FUNCTION); \
abort(); \
} \
- } while (FALSE)
+ } while (false)
+
+/* Does exactly nothing */
+#define pa_nop() do {} while (false)
-/* An assert that may be optimized away by defining NDEBUG */
+/* pa_assert() is an assert that may be optimized away by defining
+ * NDEBUG. pa_assert_fp() is an assert that may be optimized away by
+ * defining FASTPATH. It is supposed to be used in inner loops. It's
+ * there for extra paranoia checking and should probably be removed in
+ * production builds. */
#ifdef NDEBUG
-#define pa_assert(expr) do {} while (FALSE)
+#define pa_assert(expr) pa_nop()
+#define pa_assert_fp(expr) pa_nop()
+#elif defined (FASTPATH)
+#define pa_assert(expr) pa_assert_se(expr)
+#define pa_assert_fp(expr) pa_nop()
#else
#define pa_assert(expr) pa_assert_se(expr)
+#define pa_assert_fp(expr) pa_assert_se(expr)
#endif
+#ifdef NDEBUG
+#define pa_assert_not_reached() pa_nop()
+#else
#define pa_assert_not_reached() \
do { \
pa_log_error("Code should not be reached at %s:%u, function %s(). Aborting.", __FILE__, __LINE__, PA_PRETTY_FUNCTION); \
abort(); \
- } while (FALSE)
+ } while (false)
+#endif
-#define PA_PTR_TO_UINT(p) ((unsigned int) (unsigned long) (p))
-#define PA_UINT_TO_PTR(u) ((void*) (unsigned long) (u))
+/* A compile time assertion */
+#define pa_assert_cc(expr) \
+ do { \
+ switch (0) { \
+ case 0: \
+ case !!(expr): \
+ ; \
+ } \
+ } while (false)
-#define PA_PTR_TO_UINT32(p) ((uint32_t) PA_PTR_TO_UINT(p))
-#define PA_UINT32_TO_PTR(u) PA_UINT_TO_PTR((uint32_t) u)
+#define PA_PTR_TO_UINT(p) ((unsigned int) ((uintptr_t) (p)))
+#define PA_UINT_TO_PTR(u) ((void*) ((uintptr_t) (u)))
-#define PA_PTR_TO_INT(p) ((int) PA_PTR_TO_UINT(p))
-#define PA_INT_TO_PTR(u) PA_UINT_TO_PTR((int) u)
+#define PA_PTR_TO_UINT32(p) ((uint32_t) ((uintptr_t) (p)))
+#define PA_UINT32_TO_PTR(u) ((void*) ((uintptr_t) (u)))
-#define PA_PTR_TO_INT32(p) ((int32_t) PA_PTR_TO_UINT(p))
-#define PA_INT32_TO_PTR(u) PA_UINT_TO_PTR((int32_t) u)
+#define PA_PTR_TO_INT(p) ((int) ((intptr_t) (p)))
+#define PA_INT_TO_PTR(u) ((void*) ((intptr_t) (u)))
+
+#define PA_PTR_TO_INT32(p) ((int32_t) ((intptr_t) (p)))
+#define PA_INT32_TO_PTR(u) ((void*) ((intptr_t) (u)))
#ifdef OS_IS_WIN32
#define PA_PATH_SEP "\\"
#define PA_PATH_SEP_CHAR '/'
#endif
-#ifdef __GNUC__
+#if defined(__GNUC__) && defined(__ELF__)
#define PA_WARN_REFERENCE(sym, msg) \
__asm__(".section .gnu.warning." #sym); \
#endif
+#if defined(__i386__) || defined(__x86_64__)
+#define PA_DEBUG_TRAP __asm__("int $3")
+#else
+#define PA_DEBUG_TRAP raise(SIGTRAP)
+#endif
+
+#define pa_memzero(x,l) (memset((x), 0, (l)))
+#define pa_zero(x) (pa_memzero(&(x), sizeof(x)))
+
+#define PA_INT_TYPE_SIGNED(type) (!!((type) 0 > (type) -1))
+
+#define PA_INT_TYPE_MAX(type) \
+ ((type) (PA_INT_TYPE_SIGNED(type) \
+ ? ~(~(type) 0 << (8*sizeof(type)-1)) \
+ : (type) -1))
+
+#define PA_INT_TYPE_MIN(type) \
+ ((type) (PA_INT_TYPE_SIGNED(type) \
+ ? (~(type) 0 << (8*sizeof(type)-1)) \
+ : (type) 0))
+
+/* We include this at the very last place */
+#include <pulsecore/log.h>
+
#endif