#ifndef GIT_COMPAT_UTIL_H
#define GIT_COMPAT_UTIL_H
+#define _FILE_OFFSET_BITS 64
+
#ifndef FLEX_ARRAY
#if defined(__GNUC__) && (__GNUC__ < 3)
#define FLEX_ARRAY 0
#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
-#if !defined(__APPLE__) && !defined(__FreeBSD)
+#ifdef __GNUC__
+#define TYPEOF(x) (__typeof__(x))
+#else
+#define TYPEOF(x)
+#endif
+
+#define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (sizeof(x) * 8 - (bits))))
+
+/* Approximation of the length of the decimal representation of this type. */
+#define decimal_length(x) ((int)(sizeof(x) * 2.56 + 0.5) + 1)
+
+#if !defined(__APPLE__) && !defined(__FreeBSD__)
#define _XOPEN_SOURCE 600 /* glibc2 and AIX 5.3L need 500, OpenBSD needs 600 for S_ISLNK() */
#define _XOPEN_SOURCE_EXTENDED 1 /* AIX 5.3L needs this */
#endif
-#define _GNU_SOURCE
-#define _BSD_SOURCE
+#define _ALL_SOURCE 1
+#define _GNU_SOURCE 1
+#define _BSD_SOURCE 1
#include <unistd.h>
#include <stdio.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <pwd.h>
+#include <inttypes.h>
+#if defined(__CYGWIN__)
+#undef _XOPEN_SOURCE
#include <grp.h>
+#define _XOPEN_SOURCE 600
+#else
+#undef _ALL_SOURCE /* AIX 5.3L defines a struct list with _ALL_SOURCE. */
+#include <grp.h>
+#define _ALL_SOURCE 1
+#endif
#ifndef NO_ICONV
#include <iconv.h>
#define PATH_MAX 4096
#endif
+#ifndef PRIuMAX
+#define PRIuMAX "llu"
+#endif
+
#ifdef __GNUC__
#define NORETURN __attribute__((__noreturn__))
#else
extern void usage(const char *err) NORETURN;
extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
-extern void warn(const char *err, ...) __attribute__((format (printf, 1, 2)));
+extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
extern void set_usage_routine(void (*routine)(const char *err) NORETURN);
extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN);
#define MAP_FAILED ((void*)-1)
#endif
-#define mmap gitfakemmap
-#define munmap gitfakemunmap
-extern void *gitfakemmap(void *start, size_t length, int prot , int flags, int fd, off_t offset);
-extern int gitfakemunmap(void *start, size_t length);
+#define mmap git_mmap
+#define munmap git_munmap
+extern void *git_mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset);
+extern int git_munmap(void *start, size_t length);
+
+/* This value must be multiple of (pagesize * 2) */
+#define DEFAULT_PACKED_GIT_WINDOW_SIZE (1 * 1024 * 1024)
#else /* NO_MMAP */
#include <sys/mman.h>
+/* This value must be multiple of (pagesize * 2) */
+#define DEFAULT_PACKED_GIT_WINDOW_SIZE \
+ (sizeof(void*) >= 8 \
+ ? 1 * 1024 * 1024 * 1024 \
+ : 32 * 1024 * 1024)
+
#endif /* NO_MMAP */
+#define DEFAULT_PACKED_GIT_LIMIT \
+ ((1024L * 1024L) * (sizeof(void*) >= 8 ? 8192 : 256))
+
+#ifdef NO_PREAD
+#define pread git_pread
+extern ssize_t git_pread(int fd, void *buf, size_t count, off_t offset);
+#endif
+
#ifdef NO_SETENV
#define setenv gitsetenv
extern int gitsetenv(const char *, const char *, int);
extern size_t gitstrlcpy(char *, const char *, size_t);
#endif
+#ifdef NO_STRTOUMAX
+#define strtoumax gitstrtoumax
+extern uintmax_t gitstrtoumax(const char *, char **, int);
+#endif
+
+#ifdef NO_HSTRERROR
+#define hstrerror githstrerror
+extern const char *githstrerror(int herror);
+#endif
+
+extern void release_pack_memory(size_t, int);
+
static inline char* xstrdup(const char *str)
{
char *ret = strdup(str);
- if (!ret)
- die("Out of memory, strdup failed");
+ if (!ret) {
+ release_pack_memory(strlen(str) + 1, -1);
+ ret = strdup(str);
+ if (!ret)
+ die("Out of memory, strdup failed");
+ }
return ret;
}
void *ret = malloc(size);
if (!ret && !size)
ret = malloc(1);
- if (!ret)
- die("Out of memory, malloc failed");
+ if (!ret) {
+ release_pack_memory(size, -1);
+ ret = malloc(size);
+ if (!ret && !size)
+ ret = malloc(1);
+ if (!ret)
+ die("Out of memory, malloc failed");
+ }
#ifdef XMALLOC_POISON
memset(ret, 0xA5, size);
#endif
return ret;
}
+static inline char *xstrndup(const char *str, size_t len)
+{
+ char *p;
+
+ p = memchr(str, '\0', len);
+ if (p)
+ len = p - str;
+ p = xmalloc(len + 1);
+ memcpy(p, str, len);
+ p[len] = '\0';
+ return p;
+}
+
static inline void *xrealloc(void *ptr, size_t size)
{
void *ret = realloc(ptr, size);
if (!ret && !size)
ret = realloc(ptr, 1);
- if (!ret)
- die("Out of memory, realloc failed");
+ if (!ret) {
+ release_pack_memory(size, -1);
+ ret = realloc(ptr, size);
+ if (!ret && !size)
+ ret = realloc(ptr, 1);
+ if (!ret)
+ die("Out of memory, realloc failed");
+ }
return ret;
}
void *ret = calloc(nmemb, size);
if (!ret && (!nmemb || !size))
ret = calloc(1, 1);
- if (!ret)
- die("Out of memory, calloc failed");
+ if (!ret) {
+ release_pack_memory(nmemb * size, -1);
+ ret = calloc(nmemb, size);
+ if (!ret && (!nmemb || !size))
+ ret = calloc(1, 1);
+ if (!ret)
+ die("Out of memory, calloc failed");
+ }
+ return ret;
+}
+
+static inline void *xmmap(void *start, size_t length,
+ int prot, int flags, int fd, off_t offset)
+{
+ void *ret = mmap(start, length, prot, flags, fd, offset);
+ if (ret == MAP_FAILED) {
+ if (!length)
+ return NULL;
+ release_pack_memory(length, fd);
+ ret = mmap(start, length, prot, flags, fd, offset);
+ if (ret == MAP_FAILED)
+ die("Out of memory? mmap failed: %s", strerror(errno));
+ }
return ret;
}
}
}
+static inline int xdup(int fd)
+{
+ int ret = dup(fd);
+ if (ret < 0)
+ die("dup failed: %s", strerror(errno));
+ return ret;
+}
+
+static inline FILE *xfdopen(int fd, const char *mode)
+{
+ FILE *stream = fdopen(fd, mode);
+ if (stream == NULL)
+ die("Out of memory? fdopen failed: %s", strerror(errno));
+ return stream;
+}
+
+static inline int xmkstemp(char *template)
+{
+ int fd;
+
+ fd = mkstemp(template);
+ if (fd < 0)
+ die("Unable to create temporary file: %s", strerror(errno));
+ return fd;
+}
+
+static inline size_t xsize_t(off_t len)
+{
+ return (size_t)len;
+}
+
static inline int has_extension(const char *filename, const char *ext)
{
size_t len = strlen(filename);
return x;
}
+static inline int prefixcmp(const char *str, const char *prefix)
+{
+ return strncmp(str, prefix, strlen(prefix));
+}
+
+static inline int strtoul_ui(char const *s, int base, unsigned int *result)
+{
+ unsigned long ul;
+ char *p;
+
+ errno = 0;
+ ul = strtoul(s, &p, base);
+ if (errno || *p || p == s || (unsigned int) ul != ul)
+ return -1;
+ *result = ul;
+ return 0;
+}
+
#endif