summaryrefslogtreecommitdiff
path: root/git-compat-util.h
diff options
context:
space:
mode:
Diffstat (limited to 'git-compat-util.h')
-rw-r--r--git-compat-util.h82
1 files changed, 55 insertions, 27 deletions
diff --git a/git-compat-util.h b/git-compat-util.h
index 2ce113973b..aed0b5d4f9 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -1,6 +1,15 @@
#ifndef GIT_COMPAT_UTIL_H
#define GIT_COMPAT_UTIL_H
+#ifdef USE_MSVC_CRTDBG
+/*
+ * For these to work they must appear very early in each
+ * file -- before most of the standard header files.
+ */
+#include <stdlib.h>
+#include <crtdbg.h>
+#endif
+
#define _FILE_OFFSET_BITS 64
@@ -68,7 +77,7 @@
#endif
/*
* ARRAY_SIZE - get the number of elements in a visible array
- * <at> x: the array whose size you want.
+ * @x: the array whose size you want.
*
* This does not work on pointers, or arrays declared as [], or
* function parameters. With correct compiler support, such usage
@@ -311,30 +320,11 @@ char *gitdirname(char *);
#define PATH_MAX 4096
#endif
-#ifndef PRIuMAX
-#define PRIuMAX "llu"
-#endif
-
-#ifndef SCNuMAX
-#define SCNuMAX PRIuMAX
-#endif
-
-#ifndef PRIu32
-#define PRIu32 "u"
-#endif
-
-#ifndef PRIx32
-#define PRIx32 "x"
-#endif
-
-#ifndef PRIo32
-#define PRIo32 "o"
-#endif
-
typedef uintmax_t timestamp_t;
#define PRItime PRIuMAX
#define parse_timestamp strtoumax
#define TIME_MAX UINTMAX_MAX
+#define TIME_MIN 0
#ifndef PATH_SEP
#define PATH_SEP ':'
@@ -813,9 +803,6 @@ const char *inet_ntop(int af, const void *src, char *dst, size_t size);
int git_atexit(void (*handler)(void));
#endif
-typedef void (*try_to_free_t)(size_t);
-try_to_free_t set_try_to_free_routine(try_to_free_t);
-
static inline size_t st_add(size_t a, size_t b)
{
if (unsigned_add_overflows(a, b))
@@ -1089,10 +1076,10 @@ static inline int strtol_i(char const *s, int base, int *result)
return 0;
}
+void git_stable_qsort(void *base, size_t nmemb, size_t size,
+ int(*compar)(const void *, const void *));
#ifdef INTERNAL_QSORT
-void git_qsort(void *base, size_t nmemb, size_t size,
- int(*compar)(const void *, const void *));
-#define qsort git_qsort
+#define qsort git_stable_qsort
#endif
#define QSORT(base, n, compar) sane_qsort((base), (n), sizeof(*(base)), compar)
@@ -1103,6 +1090,9 @@ static inline void sane_qsort(void *base, size_t nmemb, size_t size,
qsort(base, nmemb, size, compar);
}
+#define STABLE_QSORT(base, n, compar) \
+ git_stable_qsort((base), (n), sizeof(*(base)), compar)
+
#ifndef HAVE_ISO_QSORT_S
int git_qsort_s(void *base, size_t nmemb, size_t size,
int (*compar)(const void *, const void *, void *), void *ctx);
@@ -1307,4 +1297,42 @@ void unleak_memory(const void *ptr, size_t len);
*/
#include "banned.h"
+/*
+ * container_of - Get the address of an object containing a field.
+ *
+ * @ptr: pointer to the field.
+ * @type: type of the object.
+ * @member: name of the field within the object.
+ */
+#define container_of(ptr, type, member) \
+ ((type *) ((char *)(ptr) - offsetof(type, member)))
+
+/*
+ * helper function for `container_of_or_null' to avoid multiple
+ * evaluation of @ptr
+ */
+static inline void *container_of_or_null_offset(void *ptr, size_t offset)
+{
+ return ptr ? (char *)ptr - offset : NULL;
+}
+
+/*
+ * like `container_of', but allows returned value to be NULL
+ */
+#define container_of_or_null(ptr, type, member) \
+ (type *)container_of_or_null_offset(ptr, offsetof(type, member))
+
+/*
+ * like offsetof(), but takes a pointer to a a variable of type which
+ * contains @member, instead of a specified type.
+ * @ptr is subject to multiple evaluation since we can't rely on __typeof__
+ * everywhere.
+ */
+#if defined(__GNUC__) /* clang sets this, too */
+#define OFFSETOF_VAR(ptr, member) offsetof(__typeof__(*ptr), member)
+#else /* !__GNUC__ */
+#define OFFSETOF_VAR(ptr, member) \
+ ((uintptr_t)&(ptr)->member - (uintptr_t)(ptr))
+#endif /* !__GNUC__ */
+
#endif