#include "bitmap.h"
#include "byte-order.h"
#include "coverage.h"
+#include "ovs-rcu.h"
#include "ovs-thread.h"
+#include "socket-util.h"
#include "vlog.h"
#ifdef HAVE_PTHREAD_SET_NAME_NP
#include <pthread_np.h>
COVERAGE_DEFINE(util_xalloc);
/* argv[0] without directory names. */
-const char *program_name;
+char *program_name;
/* Name for the currently running thread or process, for log messages, process
* listings, and debuggers. */
void *
xmalloc_cacheline(size_t size)
{
+#ifdef HAVE_POSIX_MEMALIGN
+ void *p;
+ int error;
+
+ COVERAGE_INC(util_xalloc);
+ error = posix_memalign(&p, CACHE_LINE_SIZE, size ? size : 1);
+ if (error != 0) {
+ out_of_memory();
+ }
+ return p;
+#else
void **payload;
void *base;
*payload = base;
return (char *) payload + MEM_ALIGN;
+#endif
}
/* Like xmalloc_cacheline() but clears the allocated memory to all zero
void
free_cacheline(void *p)
{
+#ifdef HAVE_POSIX_MEMALIGN
+ free(p);
+#else
if (p) {
free(*(void **) ((uintptr_t) p - MEM_ALIGN));
}
+#endif
}
char *
set_program_name__(const char *argv0, const char *version, const char *date,
const char *time)
{
-#ifdef _WIN32
char *basename;
+#ifdef _WIN32
size_t max_len = strlen(argv0) + 1;
- if (program_name) {
- return;
- }
+ SetErrorMode(GetErrorMode() | SEM_NOGPFAULTERRORBOX);
+ _set_output_format(_TWO_DIGIT_EXPONENT);
+
basename = xmalloc(max_len);
_splitpath_s(argv0, NULL, 0, NULL, 0, basename, max_len, NULL, 0);
- assert_single_threaded();
- program_name = basename;
#else
const char *slash = strrchr(argv0, '/');
- assert_single_threaded();
- program_name = slash ? slash + 1 : argv0;
+ basename = xstrdup(slash ? slash + 1 : argv0);
#endif
- free(program_version);
+ assert_single_threaded();
+ free(program_name);
+ /* Remove libtool prefix, if it is there */
+ if (strncmp(basename, "lt-", 3) == 0) {
+ char *tmp_name = basename;
+ basename = xstrdup(basename + 3);
+ free(tmp_name);
+ }
+ program_name = basename;
+ free(program_version);
if (!strcmp(version, VERSION)) {
program_version = xasprintf("%s (Open vSwitch) "VERSION"\n"
"Compiled %s %s\n",
}
}
+bool
+str_to_uint(const char *s, int base, unsigned int *u)
+{
+ long long ll;
+ bool ok = str_to_llong(s, base, &ll);
+ if (!ok || ll < 0 || ll > UINT_MAX) {
+ *u = 0;
+ return false;
+ } else {
+ *u = ll;
+ return true;
+ }
+}
+
/* Converts floating-point string 's' into a double. If successful, stores
* the double in '*d' and returns true; on failure, stores 0 in '*d' and
* returns false.
}
/* Returns the integer value of the 'n' hexadecimal digits starting at 's', or
- * UINT_MAX if one of those "digits" is not really a hex digit. If 'ok' is
- * nonnull, '*ok' is set to true if the conversion succeeds or to false if a
- * non-hex digit is detected. */
-unsigned int
+ * UINTMAX_MAX if one of those "digits" is not really a hex digit. Sets '*ok'
+ * to true if the conversion succeeds or to false if a non-hex digit is
+ * detected. */
+uintmax_t
hexits_value(const char *s, size_t n, bool *ok)
{
- unsigned int value;
+ uintmax_t value;
size_t i;
value = 0;
for (i = 0; i < n; i++) {
int hexit = hexit_value(s[i]);
if (hexit < 0) {
- if (ok) {
- *ok = false;
- }
- return UINT_MAX;
+ *ok = false;
+ return UINTMAX_MAX;
}
value = (value << 4) + hexit;
}
- if (ok) {
- *ok = true;
- }
+ *ok = true;
return value;
}
: ".");
}
+#ifndef _WIN32
/* Returns the directory name portion of 'file_name' as a malloc()'d string,
* similar to the POSIX dirname() function but thread-safe. */
char *
return xmemdup0(file_name + start, end - start);
}
+#endif /* _WIN32 */
/* If 'file_name' starts with '/', returns a copy of 'file_name'. Otherwise,
* returns an absolute path to 'file_name' considering it relative to 'dir',
}
/* Returns the number of trailing 0-bits in 'n'. Undefined if 'n' == 0. */
-#if __GNUC__ >= 4
+#if __GNUC__ >= 4 || _MSC_VER
/* Defined inline in util.h. */
#else
/* Returns the number of trailing 0-bits in 'n'. Undefined if 'n' == 0. */
/* Returns true if the 'n' bytes starting at 'p' are zeros. */
bool
-is_all_zeros(const uint8_t *p, size_t n)
+is_all_zeros(const void *p_, size_t n)
{
+ const uint8_t *p = p_;
size_t i;
for (i = 0; i < n; i++) {
/* Returns true if the 'n' bytes starting at 'p' are 0xff. */
bool
-is_all_ones(const uint8_t *p, size_t n)
+is_all_ones(const void *p_, size_t n)
{
+ const uint8_t *p = p_;
size_t i;
for (i = 0; i < n; i++) {
return true;
}
+/* Scans the bits in 'p' that have bit offsets 'start' through 'end'
+ * (inclusive) for the first bit with value 'target'. If one is found, returns
+ * its offset, otherwise 'end'. 'p' is 'len' bytes long.
+ *
+ * If you consider all of 'p' to be a single unsigned integer in network byte
+ * order, then bit N is the bit with value 2**N. That is, bit 0 is the bit
+ * with value 1 in p[len - 1], bit 1 is the bit with value 2, bit 2 is the bit
+ * with value 4, ..., bit 8 is the bit with value 1 in p[len - 2], and so on.
+ *
+ * Required invariant:
+ * start <= end
+ */
+unsigned int
+bitwise_scan(const void *p_, unsigned int len, bool target, unsigned int start,
+ unsigned int end)
+{
+ const uint8_t *p = p_;
+ unsigned int ofs;
+
+ for (ofs = start; ofs < end; ofs++) {
+ bool bit = (p[len - (ofs / 8 + 1)] & (1u << (ofs % 8))) != 0;
+ if (bit == target) {
+ break;
+ }
+ }
+ return ofs;
+}
+
+
/* Copies the 'n_bits' low-order bits of 'value' into the 'n_bits' bits
* starting at bit 'dst_ofs' in 'dst', which is 'dst_len' bytes long.
*
return ok;
}
+void
+xsleep(unsigned int seconds)
+{
+ ovsrcu_quiesce_start();
+#ifdef _WIN32
+ Sleep(seconds * 1000);
+#else
+ sleep(seconds);
+#endif
+ ovsrcu_quiesce_end();
+}
+
#ifdef _WIN32
\f
char *
}
return 0;
}
+
+OVS_CONSTRUCTOR(winsock_start) {
+ WSADATA wsaData;
+ int error;
+
+ error = WSAStartup(MAKEWORD(2, 2), &wsaData);
+ if (error != 0) {
+ VLOG_FATAL("WSAStartup failed: %s", sock_strerror(sock_errno()));
+ }
+}
#endif
projects / cascardo / ovs.git / blobdiff