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fixes #323: refix locking impl for threaded env

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git-svn-id: svn://svn.lighttpd.net/xcache/trunk@1366 c26eb9a1-5813-0410-bd6c-c2e55f420ca7
3.1
Xuefer 10 years ago
parent 2c719b5b6a
commit 1267e8bb4f
11 changed files with 438 additions and 417 deletions
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6
ChangeLog
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@ -8,7 +8,13 @@ ChangeLog
* disassembler: fixes crash with nested sandbox
* disassembler, Decompiler: improves support for PHP_4 ~ PHP_5_4, adds support for PHP_5_5
3.0.4 2013-09-??
ChangeLog
========
* fixes #323: refix locking impl for threaded env
3.0.3 2013-06-18
ChangeLog
========
* clean files in release (fix htdocs config)

28
Makefile.frag.deps
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@ -1,25 +1,25 @@
$(XCACHE_INCLUDES_I) includes.lo $(builddir)/includes.lo: $(srcdir)/mod_cacher/xc_cache.h $(srcdir)/xcache.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_lock.h $(srcdir)/xcache/xc_shm.h $(srcdir)/xcache/xc_utils.h
$(XCACHE_INCLUDES_I) includes.lo $(builddir)/includes.lo: $(srcdir)/mod_cacher/xc_cache.h $(srcdir)/xcache.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_mutex.h $(srcdir)/xcache/xc_shm.h $(srcdir)/xcache/xc_utils.h
mod_assembler/xc_assembler.lo $(builddir)/mod_assembler/xc_assembler.lo:
mod_cacher/xc_cacher.lo $(builddir)/mod_cacher/xc_cacher.lo: $(srcdir)/mod_cacher/xc_cache.h $(srcdir)/mod_cacher/xc_cacher.h $(srcdir)/util/xc_align.h $(srcdir)/util/xc_stack.h $(srcdir)/util/xc_trace.h $(srcdir)/util/xc_vector.h $(srcdir)/xcache_globals.h $(srcdir)/xcache.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_extension.h $(srcdir)/xcache/xc_ini.h $(srcdir)/xcache/xc_lock.h $(srcdir)/xcache/xc_sandbox.h $(srcdir)/xcache/xc_shm.h $(srcdir)/xcache/xc_utils.h $(XCACHE_PROC_H)
mod_coverager/xc_coverager.lo $(builddir)/mod_coverager/xc_coverager.lo: $(srcdir)/mod_coverager/xc_coverager.h $(srcdir)/util/xc_stack.h $(srcdir)/util/xc_trace.h $(srcdir)/xcache_globals.h $(srcdir)/xcache.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_extension.h $(srcdir)/xcache/xc_ini.h $(srcdir)/xcache/xc_lock.h $(srcdir)/xcache/xc_shm.h $(srcdir)/xcache/xc_utils.h
mod_cacher/xc_cacher.lo $(builddir)/mod_cacher/xc_cacher.lo: $(srcdir)/mod_cacher/xc_cache.h $(srcdir)/mod_cacher/xc_cacher.h $(srcdir)/util/xc_align.h $(srcdir)/util/xc_stack.h $(srcdir)/util/xc_trace.h $(srcdir)/util/xc_vector.h $(srcdir)/xcache_globals.h $(srcdir)/xcache.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_extension.h $(srcdir)/xcache/xc_ini.h $(srcdir)/xcache/xc_mutex.h $(srcdir)/xcache/xc_sandbox.h $(srcdir)/xcache/xc_shm.h $(srcdir)/xcache/xc_utils.h $(XCACHE_PROC_H)
mod_coverager/xc_coverager.lo $(builddir)/mod_coverager/xc_coverager.lo: $(srcdir)/mod_coverager/xc_coverager.h $(srcdir)/util/xc_stack.h $(srcdir)/util/xc_trace.h $(srcdir)/xcache_globals.h $(srcdir)/xcache.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_extension.h $(srcdir)/xcache/xc_ini.h $(srcdir)/xcache/xc_mutex.h $(srcdir)/xcache/xc_shm.h $(srcdir)/xcache/xc_utils.h
mod_decoder/xc_decoder.lo $(builddir)/mod_decoder/xc_decoder.lo:
mod_disassembler/xc_disassembler.lo $(builddir)/mod_disassembler/xc_disassembler.lo: $(srcdir)/mod_disassembler/xc_disassembler.h $(srcdir)/xcache.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_ini.h $(srcdir)/xcache/xc_lock.h $(srcdir)/xcache/xc_sandbox.h $(srcdir)/xcache/xc_shm.h $(srcdir)/xcache/xc_utils.h $(XCACHE_PROC_H)
mod_disassembler/xc_disassembler.lo $(builddir)/mod_disassembler/xc_disassembler.lo: $(srcdir)/mod_disassembler/xc_disassembler.h $(srcdir)/xcache.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_ini.h $(srcdir)/xcache/xc_mutex.h $(srcdir)/xcache/xc_sandbox.h $(srcdir)/xcache/xc_shm.h $(srcdir)/xcache/xc_utils.h $(XCACHE_PROC_H)
mod_encoder/xc_encoder.lo $(builddir)/mod_encoder/xc_encoder.lo:
mod_optimizer/xc_optimizer.lo $(builddir)/mod_optimizer/xc_optimizer.lo: $(srcdir)/mod_optimizer/xc_optimizer.h $(srcdir)/util/xc_stack.h $(srcdir)/util/xc_trace.h $(srcdir)/xcache_globals.h $(srcdir)/xcache.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_const_string.h $(srcdir)/xcache/xc_extension.h $(srcdir)/xcache/xc_ini.h $(srcdir)/xcache/xc_lock.h $(srcdir)/xcache/xc_opcode_spec.h $(srcdir)/xcache/xc_shm.h $(srcdir)/xcache/xc_utils.h $(XCACHE_PROC_H)
mod_optimizer/xc_optimizer.lo $(builddir)/mod_optimizer/xc_optimizer.lo: $(srcdir)/mod_optimizer/xc_optimizer.h $(srcdir)/util/xc_stack.h $(srcdir)/util/xc_trace.h $(srcdir)/xcache_globals.h $(srcdir)/xcache.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_const_string.h $(srcdir)/xcache/xc_extension.h $(srcdir)/xcache/xc_ini.h $(srcdir)/xcache/xc_mutex.h $(srcdir)/xcache/xc_opcode_spec.h $(srcdir)/xcache/xc_shm.h $(srcdir)/xcache/xc_utils.h $(XCACHE_PROC_H)
util/xc_stack.lo $(builddir)/util/xc_stack.lo: $(srcdir)/util/xc_stack.h $(srcdir)/util/xc_trace.h
util/xc_trace.lo $(builddir)/util/xc_trace.lo: $(srcdir)/util/xc_trace.h
xcache.lo $(builddir)/xcache.lo: $(srcdir)/util/xc_foreachcoresig.h $(srcdir)/util/xc_stack.h $(srcdir)/xcache_globals.h $(srcdir)/xcache.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_const_string.h $(srcdir)/xcache/xc_extension.h $(srcdir)/xcache/xc_ini.h $(srcdir)/xcache/xc_lock.h $(srcdir)/xcache/xc_opcode_spec.h $(srcdir)/xcache/xc_shm.h $(srcdir)/xcache/xc_utils.h $(XCACHE_PROC_H)
xcache.lo $(builddir)/xcache.lo: $(srcdir)/util/xc_foreachcoresig.h $(srcdir)/util/xc_stack.h $(srcdir)/xcache_globals.h $(srcdir)/xcache.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_const_string.h $(srcdir)/xcache/xc_extension.h $(srcdir)/xcache/xc_ini.h $(srcdir)/xcache/xc_mutex.h $(srcdir)/xcache/xc_opcode_spec.h $(srcdir)/xcache/xc_shm.h $(srcdir)/xcache/xc_utils.h $(XCACHE_PROC_H)
xcache/xc_allocator_bestfit.lo $(builddir)/xcache/xc_allocator_bestfit.lo: $(srcdir)/util/xc_align.h $(srcdir)/util/xc_trace.h $(srcdir)/xcache/xc_allocator.h $(srcdir)/xcache/xc_shm.h
xcache/xc_allocator.lo $(builddir)/xcache/xc_allocator.lo: $(srcdir)/xcache/xc_allocator.h $(srcdir)/xcache/xc_shm.h
xcache/xc_compatibility.lo $(builddir)/xcache/xc_compatibility.lo: $(srcdir)/xcache/xc_compatibility.h
xcache/xc_const_string.lo $(builddir)/xcache/xc_const_string.lo: $(srcdir)/xcache.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_const_string.h $(srcdir)/xcache/xc_const_string_opcodes_php4.x.h $(srcdir)/xcache/xc_const_string_opcodes_php5.0.h $(srcdir)/xcache/xc_const_string_opcodes_php5.1.h $(srcdir)/xcache/xc_const_string_opcodes_php5.2.h $(srcdir)/xcache/xc_const_string_opcodes_php5.3.h $(srcdir)/xcache/xc_const_string_opcodes_php5.4.h $(srcdir)/xcache/xc_const_string_opcodes_php5.5.h $(srcdir)/xcache/xc_const_string_opcodes_php6.x.h $(srcdir)/xcache/xc_lock.h $(srcdir)/xcache/xc_shm.h
xcache/xc_extension.lo $(builddir)/xcache/xc_extension.lo: $(srcdir)/util/xc_stack.h $(srcdir)/util/xc_trace.h $(srcdir)/xcache.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_extension.h $(srcdir)/xcache/xc_lock.h $(srcdir)/xcache/xc_shm.h
xcache/xc_const_string.lo $(builddir)/xcache/xc_const_string.lo: $(srcdir)/xcache.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_const_string.h $(srcdir)/xcache/xc_const_string_opcodes_php4.x.h $(srcdir)/xcache/xc_const_string_opcodes_php5.0.h $(srcdir)/xcache/xc_const_string_opcodes_php5.1.h $(srcdir)/xcache/xc_const_string_opcodes_php5.2.h $(srcdir)/xcache/xc_const_string_opcodes_php5.3.h $(srcdir)/xcache/xc_const_string_opcodes_php5.4.h $(srcdir)/xcache/xc_const_string_opcodes_php5.5.h $(srcdir)/xcache/xc_const_string_opcodes_php6.x.h $(srcdir)/xcache/xc_mutex.h $(srcdir)/xcache/xc_shm.h
xcache/xc_extension.lo $(builddir)/xcache/xc_extension.lo: $(srcdir)/util/xc_stack.h $(srcdir)/util/xc_trace.h $(srcdir)/xcache.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_extension.h $(srcdir)/xcache/xc_mutex.h $(srcdir)/xcache/xc_shm.h
xcache/xc_ini.lo $(builddir)/xcache/xc_ini.lo: $(srcdir)/xcache/xc_ini.h
xcache/xc_lock.lo $(builddir)/xcache/xc_lock.lo: $(srcdir)/xcache.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_lock.h $(srcdir)/xcache/xc_shm.h
xcache/xc_malloc.lo $(builddir)/xcache/xc_malloc.lo: $(srcdir)/util/xc_align.h $(srcdir)/xcache.h $(srcdir)/xcache/xc_allocator.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_lock.h $(srcdir)/xcache/xc_shm.h
xcache/xc_opcode_spec.lo $(builddir)/xcache/xc_opcode_spec.lo: $(srcdir)/xcache.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_const_string.h $(srcdir)/xcache/xc_lock.h $(srcdir)/xcache/xc_opcode_spec_def.h $(srcdir)/xcache/xc_opcode_spec.h $(srcdir)/xcache/xc_shm.h
xcache/xc_malloc.lo $(builddir)/xcache/xc_malloc.lo: $(srcdir)/util/xc_align.h $(srcdir)/xcache.h $(srcdir)/xcache/xc_allocator.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_mutex.h $(srcdir)/xcache/xc_shm.h
xcache/xc_mutex.lo $(builddir)/xcache/xc_mutex.lo: $(srcdir)/xcache.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_mutex.h $(srcdir)/xcache/xc_shm.h
xcache/xc_opcode_spec.lo $(builddir)/xcache/xc_opcode_spec.lo: $(srcdir)/xcache.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_const_string.h $(srcdir)/xcache/xc_mutex.h $(srcdir)/xcache/xc_opcode_spec_def.h $(srcdir)/xcache/xc_opcode_spec.h $(srcdir)/xcache/xc_shm.h
xcache/xc_processor.lo $(builddir)/xcache/xc_processor.lo: $(XCACHE_PROC_C)
xcache/xc_sandbox.lo $(builddir)/xcache/xc_sandbox.lo: $(srcdir)/util/xc_stack.h $(srcdir)/xcache_globals.h $(srcdir)/xcache.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_lock.h $(srcdir)/xcache/xc_sandbox.h $(srcdir)/xcache/xc_shm.h $(srcdir)/xcache/xc_utils.h
xcache/xc_sandbox.lo $(builddir)/xcache/xc_sandbox.lo: $(srcdir)/util/xc_stack.h $(srcdir)/xcache_globals.h $(srcdir)/xcache.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_mutex.h $(srcdir)/xcache/xc_sandbox.h $(srcdir)/xcache/xc_shm.h $(srcdir)/xcache/xc_utils.h
xcache/xc_shm.lo $(builddir)/xcache/xc_shm.lo: $(srcdir)/xcache/xc_shm.h
xcache/xc_shm_mmap.lo $(builddir)/xcache/xc_shm_mmap.lo: $(srcdir)/xcache.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_lock.h $(srcdir)/xcache/xc_shm.h $(srcdir)/xcache/xc_utils.h
xcache/xc_utils.lo $(builddir)/xcache/xc_utils.lo: $(srcdir)/util/xc_stack.h $(srcdir)/util/xc_trace.h $(srcdir)/xcache_globals.h $(srcdir)/xcache.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_lock.h $(srcdir)/xcache/xc_opcode_spec.h $(srcdir)/xcache/xc_shm.h $(srcdir)/xcache/xc_utils.h
xcache/xc_shm_mmap.lo $(builddir)/xcache/xc_shm_mmap.lo: $(srcdir)/xcache.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_mutex.h $(srcdir)/xcache/xc_shm.h $(srcdir)/xcache/xc_utils.h
xcache/xc_utils.lo $(builddir)/xcache/xc_utils.lo: $(srcdir)/util/xc_stack.h $(srcdir)/util/xc_trace.h $(srcdir)/xcache_globals.h $(srcdir)/xcache.h $(srcdir)/xcache/xc_compatibility.h $(srcdir)/xcache/xc_mutex.h $(srcdir)/xcache/xc_opcode_spec.h $(srcdir)/xcache/xc_shm.h $(srcdir)/xcache/xc_utils.h

4
NEWS
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@ -5,6 +5,10 @@
* fixes support for __FILE__ __DIR__ on moved/hardlinked files
* disassembler now working again (fail since 3.0), supports PHP 4.x ~ PHP 5.5.x
3.0.4 2013-09-??
========
* fixes #323: refix locking impl for threaded env
3.0.3 2013-06-18
========
* clean files in release (fix htdocs config)

2
config.m4
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@ -37,7 +37,7 @@ xc_compatibility.c \
xc_const_string.c \
xc_extension.c \
xc_ini.c \
xc_lock.c \
xc_mutex.c \
xc_opcode_spec.c \
xc_processor.c \
xc_sandbox.c \

2
config.w32
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@ -24,7 +24,7 @@ xc_compatibility.c \
xc_const_string.c \
xc_extension.c \
xc_ini.c \
xc_lock.c \
xc_mutex.c \
xc_opcode_spec.c \
xc_processor.c \
xc_sandbox.c \

18
mod_cacher/xc_cacher.c
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@ -36,8 +36,8 @@
#define ECALLOC_ONE(x) ECALLOC_N(x, 1)
#define VAR_ENTRY_EXPIRED(pentry) ((pentry)->ttl && XG(request_time) > (pentry)->ctime + (time_t) (pentry)->ttl)
#define CHECK(x, e) do { if ((x) == NULL) { zend_error(E_ERROR, "XCache: " e); goto err; } } while (0)
#define LOCK(x) xc_lock((x)->lck)
#define UNLOCK(x) xc_unlock((x)->lck)
#define LOCK(x) xc_mutex_lock((x)->mutex)
#define UNLOCK(x) xc_mutex_unlock((x)->mutex)
#define ENTER_LOCK_EX(x) \
LOCK((x)); \
@ -100,8 +100,8 @@ typedef struct { /* {{{ xc_cache_t: only cache info, not in shm */
int cacheid;
xc_hash_t *hcache; /* hash to cacheid */
xc_lock_t *lck;
xc_shm_t *shm; /* which shm contains us */
xc_mutex_t *mutex;
xc_shm_t *shm; /* which shm contains us */
xc_allocator_t *allocator;
xc_hash_t *hentry; /* hash settings to entry */
@ -2605,10 +2605,10 @@ static xc_shm_t *xc_cache_destroy(xc_cache_t *caches, xc_hash_t *hcache) /* {{{
for (i = 0; i < hcache->size; i ++) {
xc_cache_t *cache = &caches[i];
if (cache) {
if (cache->lck) {
xc_lock_destroy(cache->lck);
/* do NOT touch cached data, do not release mutex shared inside cache */
if (cache->mutex) {
xc_mutex_destroy(cache->mutex);
}
/* do NOT touch cached data */
shm = cache->shm;
if (shm) {
cache->shm->handlers->memdestroy(cache->allocator);
@ -2655,8 +2655,8 @@ static xc_cache_t *xc_cache_init(xc_shm_t *shm, const char *allocator_name, xc_h
if (hphp) {
CHECK(cache->cached->phps = allocator->vtable->calloc(allocator, hphp->size, sizeof(xc_entry_data_php_t*)), "create phps OOM");
}
CHECK(cache->lck = allocator->vtable->calloc(allocator, 1, xc_lock_size()), "create lock OOM");
CHECK(xc_lock_init(cache->lck, NULL, 1), "can't create lock");
CHECK(cache->mutex = allocator->vtable->calloc(allocator, 1, xc_mutex_size()), "create lock OOM");
CHECK(cache->mutex = xc_mutex_init(cache->mutex, NULL, 1), "can't create mutex");
cache->hcache = hcache;
cache->hentry = hentry;

2
xcache.h
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@ -19,7 +19,7 @@
#include <config.h>
#endif
#include "xcache/xc_shm.h"
#include "xcache/xc_lock.h"
#include "xcache/xc_mutex.h"
#include "xcache/xc_compatibility.h"
extern zend_module_entry xcache_module_entry;

373
xcache/xc_lock.c
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@ -1,373 +0,0 @@
#include "xc_lock.h"
#include "xcache.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#ifdef ZEND_WIN32
# include <process.h>
#else
# include <unistd.h>
# include <fcntl.h>
# include <errno.h>
#endif
/* {{{ detect what type of lock is needed */
#ifdef ZTS
# define XC_LOCK_NEED_TS
#endif
#ifndef ZEND_WIN32
# define XC_LOCK_NEED_INTERPROCESS
#endif
#if defined(XC_LOCK_NEED_TS) && defined(XC_LOCK_NEED_INTERPROCESS)
/* allow switching off interprocess support */
# define XC_LOCK_HAVE_INTERPROCESS_SWITCH
#endif
/* }}} */
/* {{{ detect which lock is needed */
#if defined(XC_LOCK_NEED_TS) && defined(XC_LOCK_NEED_INTERPROCESS)
# ifdef PTHREADS
# define XC_LOCK_USE_PTHREAD
# ifndef _POSIX_THREAD_PROCESS_SHARED
# define XC_LOCK_USE_FCNTL
# endif
# else
# define XC_LOCK_USE_TSRM
# define XC_LOCK_USE_FCNTL
# endif
#elif defined(XC_LOCK_NEED_TS)
# define XC_LOCK_USE_TSRM
#elif defined(XC_LOCK_NEED_INTERPROCESS)
# define XC_LOCK_USE_FCNTL
#else
# define XC_LOCK_USE_NOOP
#endif
/* }}} */
/* {{{ fcntl lock impl */
#ifdef XC_LOCK_USE_FCNTL
#ifndef ZEND_WIN32
typedef int HANDLE;
# ifndef INVALID_HANDLE_VALUE
# define INVALID_HANDLE_VALUE -1
# endif
#else
# define close(h) CloseHandle(h)
# define open(filename, mode, permission) CreateFile(filename, \
GENERIC_READ | GENERIC_WRITE, \
FILE_SHARE_READ | FILE_SHARE_WRITE, \
NULL, \
OPEN_ALWAYS, \
FILE_ATTRIBUTE_NORMAL, \
NULL)
#endif
typedef struct {
HANDLE fd;
#ifdef __CYGWIN__
/* store the path for unlink() later */
char *pathname;
#endif
} xc_fcntl_lock_t;
#ifndef ZEND_WIN32
# define LCK_WR F_WRLCK
# define LCK_RD F_RDLCK
# define LCK_UN F_UNLCK
# define LCK_NB 0
static inline int dolock(xc_fcntl_lock_t *lck, int type)
{
int ret;
struct flock lock;
lock.l_type = type;
lock.l_start = 0;
lock.l_whence = SEEK_SET;
lock.l_len = 1;
lock.l_pid = 0;
do {
ret = fcntl(lck->fd, F_SETLKW, &lock);
} while (ret < 0 && errno == EINTR);
return ret;
}
#else
# include <win32/flock.h>
# include <io.h>
# include <fcntl.h>
# include <sys/types.h>
# include <sys/stat.h>
# undef errno
# define errno GetLastError()
# define getuid() 0
# define LCK_WR LOCKFILE_EXCLUSIVE_LOCK
# define LCK_RD 0
# define LCK_UN 0
# define LCK_NB LOCKFILE_FAIL_IMMEDIATELY
static inline int dolock(xc_fcntl_lock_t *lck, int type)
{
static OVERLAPPED offset = {0, 0, 0, 0, NULL};
if (type == LCK_UN) {
return UnlockFileEx(lck->fd, 0, 1, 0, &offset);
}
else {
return LockFileEx(lck->fd, type, 0, 1, 0, &offset);
}
}
#endif
/* }}} */
static zend_bool xc_fcntl_init(xc_fcntl_lock_t *lck, const char *pathname) /* {{{ */
{
HANDLE fd;
int size;
char *myname;
if (pathname == NULL) {
static int instanceId = 0;
const char default_tmpdir[] = { DEFAULT_SLASH, 't', 'm', 'p', '\0' };
const char *tmpdir;
tmpdir = getenv("TEMP");
if (!tmpdir) {
tmpdir = getenv("TMP");
if (!tmpdir) {
tmpdir = default_tmpdir;
}
}
size = strlen(tmpdir) + sizeof("/.xcache.lock") - 1 + 3 * 10 + 100;
myname = malloc(size);
snprintf(myname, size - 1, "%s%c.xcache.%d.%d.%d.lock", tmpdir, DEFAULT_SLASH, (int) getuid(), (int) getpid(), ++instanceId);
pathname = myname;
}
else {
myname = NULL;
}
fd = open(pathname, O_RDWR|O_CREAT, 0666);
if (fd != INVALID_HANDLE_VALUE) {
lck->fd = fd;
#ifdef __CYGWIN__
size = strlen(pathname) + 1;
lck->pathname = malloc(size);
memcpy(lck->pathname, pathname, size);
#else
unlink(pathname);
#endif
}
else {
zend_error(E_ERROR, "xc_fcntl_create: open(%s, O_RDWR|O_CREAT, 0666) failed:", pathname);
lck = NULL;
}
if (myname) {
free(myname);
}
return lck ? 1 : 0;
}
/* }}} */
static void xc_fcntl_destroy(xc_fcntl_lock_t *lck) /* {{{ */
{
close(lck->fd);
#ifdef __CYGWIN__
unlink(lck->pathname);
free(lck->pathname);
#endif
}
/* }}} */
static void xc_fcntl_lock(xc_fcntl_lock_t *lck) /* {{{ */
{
if (dolock(lck, LCK_WR) < 0) {
zend_error(E_ERROR, "xc_fcntl_lock failed errno:%d", errno);
}
}
/* }}} */
static void xc_fcntl_rdlock(xc_fcntl_lock_t *lck) /* {{{ */
{
if (dolock(lck, LCK_RD) < 0) {
zend_error(E_ERROR, "xc_fcntl_lock failed errno:%d", errno);
}
}
/* }}} */
static void xc_fcntl_unlock(xc_fcntl_lock_t *lck) /* {{{ */
{
if (dolock(lck, LCK_UN) < 0) {
zend_error(E_ERROR, "xc_fcntl_unlock failed errno:%d", errno);
}
}
/* }}} */
#endif /* XC_LOCK_USE_FCNTL */
struct _xc_lock_t {
#ifdef XC_LOCK_USE_NOOP
int dummy;
#endif
#ifdef XC_LOCK_USE_TSRM
MUTEX_T tsrm_mutex;
#endif
#ifdef XC_LOCK_HAVE_INTERPROCESS_SWITCH
zend_bool interprocess;
#endif
#ifdef XC_LOCK_USE_PTHREAD
pthread_mutex_t pthread_mutex;
#endif
#ifdef XC_LOCK_USE_FCNTL
xc_fcntl_lock_t fcntl_lock;
#endif
#ifndef NDEBUG
zend_bool locked;
#endif
};
#ifdef XC_LOCK_HAVE_INTERPROCESS_SWITCH
# define XC_LOCK_INTERPROCESS (lck->interprocess)
#else
# define XC_LOCK_INTERPROCESS 1
#endif
size_t xc_lock_size(void) /* {{{ */
{
return sizeof(xc_lock_t);
}
/* }}} */
xc_lock_t *xc_lock_init(xc_lock_t *lck, const char *pathname, unsigned char interprocess) /* {{{ */
{
#ifdef XC_LOCK_HAVE_INTERPROCESS_SWITCH
lck->interprocess = interprocess;
#endif
#ifdef XC_LOCK_USE_PTHREAD
{
pthread_mutexattr_t psharedm;
pthread_mutexattr_init(&psharedm);
pthread_mutexattr_setpshared(&psharedm, XC_LOCK_INTERPROCESS ? PTHREAD_PROCESS_PRIVATE : PTHREAD_PROCESS_SHARED);
pthread_mutex_init(&lck->pthread_mutex, &psharedm);
}
#endif
#ifdef XC_LOCK_USE_TSRM
lck->tsrm_mutex = tsrm_mutex_alloc();
#endif
#ifdef XC_LOCK_USE_FCNTL
if (XC_LOCK_INTERPROCESS) {
xc_fcntl_init(&lck->fcntl_lock, pathname);
}
#endif
#ifndef NDEBUG
lck->locked = 0;
#endif
return lck;
}
/* }}} */
void xc_lock_destroy(xc_lock_t *lck) /* {{{ */
{
#ifdef XC_LOCK_USE_PTHREAD
pthread_mutex_destroy(&lck->pthread_mutex);
#endif
#ifdef XC_LOCK_USE_TSRM
tsrm_mutex_free(lck->tsrm_mutex);
#endif
#ifdef XC_LOCK_USE_FCNTL
if (XC_LOCK_INTERPROCESS) {
xc_fcntl_destroy(&lck->fcntl_lock);
}
#endif
}
/* }}} */
void xc_lock(xc_lock_t *lck) /* {{{ */
{
#ifdef XC_LOCK_USE_PTHREAD
if (pthread_mutex_lock(&lck->pthread_mutex) < 0) {
zend_error(E_ERROR, "xc_lock failed errno:%d", errno);
}
#endif
#ifdef XC_LOCK_USE_TSRM
if (tsrm_mutex_lock(lck->tsrm_mutex) < 0) {
zend_error(E_ERROR, "xc_lock failed errno:%d", errno);
}
#endif
#ifdef XC_LOCK_USE_FCNTL
if (XC_LOCK_INTERPROCESS) {
xc_fcntl_lock(&lck->fcntl_lock);
}
#endif
#ifndef NDEBUG
assert(!lck->locked);
lck->locked = 1;
assert(lck->locked);
#endif
}
/* }}} */
void xc_rdlock(xc_lock_t *lck) /* {{{ */
{
#ifdef XC_LOCK_USE_PTHREAD
if (pthread_mutex_lock(&lck->pthread_mutex) < 0) {
zend_error(E_ERROR, "xc_rdlock failed errno:%d", errno);
}
#endif
#ifdef XC_LOCK_USE_TSRM
if (tsrm_mutex_lock(lck->tsrm_mutex) < 0) {
zend_error(E_ERROR, "xc_rdlock failed errno:%d", errno);
}
#endif
#ifdef XC_LOCK_USE_FCNTL
if (XC_LOCK_INTERPROCESS) {
xc_fcntl_lock(&lck->fcntl_lock);
}
#endif
#ifndef NDEBUG
assert(!lck->locked);
lck->locked = 1;
assert(lck->locked);
#endif
}
/* }}} */
void xc_unlock(xc_lock_t *lck) /* {{{ */
{
#ifndef NDEBUG
assert(lck->locked);
lck->locked = 0;
assert(!lck->locked);
#endif
#ifdef XC_LOCK_USE_FCNTL
if (XC_LOCK_INTERPROCESS) {
xc_fcntl_unlock(&lck->fcntl_lock);
}
#endif
#ifdef XC_LOCK_USE_TSRM
if (tsrm_mutex_unlock(lck->tsrm_mutex) < 0) {
zend_error(E_ERROR, "xc_unlock failed errno:%d", errno);
}
#endif
#ifdef XC_LOCK_USE_PTHREAD
if (pthread_mutex_unlock(&lck->pthread_mutex) < 0) {
zend_error(E_ERROR, "xc_unlock failed errno:%d", errno);
}
#endif
}
/* }}} */

18
xcache/xc_lock.h
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#ifndef XC_LOCK_H_1913F3DED68715D7CDA5A055E79FE0FF
#define XC_LOCK_H_1913F3DED68715D7CDA5A055E79FE0FF
#if _MSC_VER > 1000
#pragma once
#endif /* _MSC_VER > 1000 */
#include <stdlib.h>
typedef struct _xc_lock_t xc_lock_t;
size_t xc_lock_size(void);
xc_lock_t *xc_lock_init(xc_lock_t *lck, const char *pathname, unsigned char interprocess /* only with ZTS */);
void xc_lock_destroy(xc_lock_t *lck);
void xc_lock(xc_lock_t *lck);
void xc_unlock(xc_lock_t *lck);
#endif /* XC_LOCK_H_1913F3DED68715D7CDA5A055E79FE0FF */

384
xcache/xc_mutex.c
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#include "xc_mutex.h"
#include "xcache.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#ifdef ZEND_WIN32
# include <process.h>
#else
# include <unistd.h>
# include <fcntl.h>
# include <errno.h>
#endif
/* {{{ detect what type of mutex is needed */
#ifdef ZTS
# define XC_MUTEX_NEED_TS
#endif
#ifdef HAVE_FORK
# define XC_MUTEX_NEED_INTERPROCESS
#endif
#if defined(XC_MUTEX_NEED_TS) && defined(XC_MUTEX_NEED_INTERPROCESS)
/* the check is not even needed for non-threaded env */
# define XC_MUTEX_HAVE_INTERPROCESS_SWITCH
#endif
/* }}} */
/* {{{ detect which mutex is needed */
#if defined(XC_MUTEX_NEED_TS) && defined(XC_MUTEX_NEED_INTERPROCESS)
# ifdef PTHREADS
# define XC_MUTEX_USE_PTHREAD
# ifndef _POSIX_THREAD_PROCESS_SHARED
# define XC_MUTEX_USE_FCNTL
# endif
# else
# define XC_MUTEX_USE_TSRM
# define XC_MUTEX_USE_FCNTL
# endif
#elif defined(XC_MUTEX_NEED_TS)
# define XC_MUTEX_USE_TSRM
#elif defined(XC_MUTEX_NEED_INTERPROCESS)
# define XC_MUTEX_USE_FCNTL
#else
# define XC_MUTEX_USE_NOOP
#endif
/* }}} */
/* {{{ fcntl mutex impl */
#ifdef XC_MUTEX_USE_FCNTL
#ifndef ZEND_WIN32
typedef int HANDLE;
# ifndef INVALID_HANDLE_VALUE
# define INVALID_HANDLE_VALUE -1
# endif
#else
# define close(h) CloseHandle(h)
# define open(filename, mode, permission) CreateFile(filename, \
GENERIC_READ | GENERIC_WRITE, \
FILE_SHARE_READ | FILE_SHARE_WRITE, \
NULL, \
OPEN_ALWAYS, \
FILE_ATTRIBUTE_NORMAL, \
NULL)
#endif
typedef struct {
HANDLE fd;
#ifdef __CYGWIN__
/* store the path for unlink() later */
char *pathname;
#endif
} xc_fcntl_mutex_t;
#ifndef ZEND_WIN32
# define LCK_WR F_WRLCK
# define LCK_RD F_RDLCK
# define LCK_UN F_UNLCK
# define LCK_NB 0
static inline int dolock(xc_fcntl_mutex_t *fcntl_mutex, int type)
{
int ret;
struct flock lock;
lock.l_type = type;
lock.l_start = 0;
lock.l_whence = SEEK_SET;
lock.l_len = 1;
lock.l_pid = 0;
do {
ret = fcntl(fcntl_mutex->fd, F_SETLKW, &lock);
} while (ret < 0 && errno == EINTR);
return ret;
}
#else
# include <win32/flock.h>
# include <io.h>
# include <fcntl.h>
# include <sys/types.h>
# include <sys/stat.h>
# undef errno
# define errno GetLastError()
# define getuid() 0
# define LCK_WR LOCKFILE_EXCLUSIVE_LOCK
# define LCK_RD 0
# define LCK_UN 0
# define LCK_NB LOCKFILE_FAIL_IMMEDIATELY
static inline int dolock(xc_fcntl_mutex_t *fcntl_mutex, int type)
{
static OVERLAPPED offset = {0, 0, 0, 0, NULL};
if (type == LCK_UN) {
return UnlockFileEx(fcntl_mutex->fd, 0, 1, 0, &offset);
}
else {
return LockFileEx(fcntl_mutex->fd, type, 0, 1, 0, &offset);
}
}
#endif
/* }}} */
static zend_bool xc_fcntl_init(xc_fcntl_mutex_t *fcntl_mutex, const char *pathname) /* {{{ */
{
HANDLE fd;
int size;
char *myname;
if (pathname == NULL) {
static int instanceId = 0;
const char default_tmpdir[] = { DEFAULT_SLASH, 't', 'm', 'p', '\0' };
const char *tmpdir;
tmpdir = getenv("TEMP");
if (!tmpdir) {
tmpdir = getenv("TMP");
if (!tmpdir) {
tmpdir = default_tmpdir;
}
}
size = strlen(tmpdir) + sizeof("/.xcache.mutex") - 1 + 3 * 10 + 100;
myname = malloc(size);
snprintf(myname, size - 1, "%s%c.xcache.%d.%d.%d.mutex", tmpdir, DEFAULT_SLASH, (int) getuid(), (int) getpid(), ++instanceId);
pathname = myname;
}
else {
myname = NULL;
}
fd = open(pathname, O_RDWR|O_CREAT, 0666);
if (fd != INVALID_HANDLE_VALUE) {
fcntl_mutex->fd = fd;
#ifdef __CYGWIN__
size = strlen(pathname) + 1;
fcntl_mutex->pathname = malloc(size);
memcpy(fcntl_mutex->pathname, pathname, size);
#else
unlink(pathname);
#endif
}
else {
zend_error(E_ERROR, "xc_fcntl_create: open(%s, O_RDWR|O_CREAT, 0666) failed:", pathname);
fcntl_mutex = NULL;
}
if (myname) {
free(myname);
}
return fcntl_mutex ? 1 : 0;
}
/* }}} */
static void xc_fcntl_destroy(xc_fcntl_mutex_t *fcntl_mutex) /* {{{ */
{
close(fcntl_mutex->fd);
#ifdef __CYGWIN__
unlink(fcntl_mutex->pathname);
free(fcntl_mutex->pathname);
#endif
}
/* }}} */
static void xc_fcntl_mutex(xc_fcntl_mutex_t *fcntl_mutex) /* {{{ */
{
if (dolock(fcntl_mutex, LCK_WR) < 0) {
zend_error(E_ERROR, "xc_fcntl_mutex failed errno:%d", errno);
}
}
/* }}} */
static void xc_fcntl_rdlock(xc_fcntl_mutex_t *fcntl_mutex) /* {{{ */
{
if (dolock(fcntl_mutex, LCK_RD) < 0) {
zend_error(E_ERROR, "xc_fcntl_mutex failed errno:%d", errno);
}
}
/* }}} */
static void xc_fcntl_unlock(xc_fcntl_mutex_t *fcntl_mutex) /* {{{ */
{
if (dolock(fcntl_mutex, LCK_UN) < 0) {
zend_error(E_ERROR, "xc_fcntl_unlock failed errno:%d", errno);
}
}
/* }}} */
#endif /* XC_MUTEX_USE_FCNTL */
struct _xc_mutex_t {
#ifdef XC_MUTEX_USE_NOOP
int dummy;
#endif
#ifdef XC_MUTEX_HAVE_INTERPROCESS_SWITCH
zend_bool want_inter_process; /* whether the lock is created for inter process usage */
#endif
zend_bool shared; /* shared, or locally allocated */
#ifdef XC_MUTEX_USE_TSRM
MUTEX_T tsrm_mutex;
#endif
#ifdef XC_MUTEX_USE_PTHREAD
pthread_mutex_t pthread_mutex;
#endif
#ifdef XC_MUTEX_USE_FCNTL
xc_fcntl_mutex_t fcntl_mutex;
#endif
#ifndef NDEBUG
zend_bool locked;
#endif
};
#ifdef XC_MUTEX_HAVE_INTERPROCESS_SWITCH
# define xc_want_inter_process() (mutex->want_inter_process)
#elif defined(HAVE_FORK)
# define xc_want_inter_process() 1
#else
# define xc_want_inter_process() 0
#endif
size_t xc_mutex_size(void) /* {{{ */
{
return sizeof(xc_mutex_t);
}
/* }}} */
xc_mutex_t *xc_mutex_init(xc_mutex_t *const shared_mutex, const char *pathname, unsigned char want_inter_process) /* {{{ */
{
xc_mutex_t *mutex = NULL;
#ifndef HAVE_FORK
want_inter_process = 0;
#endif
/* if interprocessed is needed, shared_mutex is required to be a pre-allocated memory on shm
* this function can always return non-shared memory if necessary despite shared memory is given
*/
/* when inter-process is wanted, pthread lives in shm */
#ifdef XC_MUTEX_USE_PTHREAD
if (want_inter_process) {
assert(shared_mutex);
mutex = shared_mutex;
mutex->shared = 1;
}
else
#endif
{
/* all other mutex assumed live locally */
mutex = calloc(1, sizeof(*mutex));
mutex->shared = 0;
#ifdef XC_MUTEX_HAVE_INTERPROCESS_SWITCH
mutex->want_inter_process = want_inter_process;
#endif
}
#ifdef XC_MUTEX_USE_PTHREAD
{
/* If you see mutex leak using valgrind, see xc_mutex_destroy function */
pthread_mutexattr_t psharedm;
pthread_mutexattr_init(&psharedm);
pthread_mutexattr_setpshared(&psharedm, xc_want_inter_process() ? PTHREAD_PROCESS_PRIVATE : PTHREAD_PROCESS_SHARED);
pthread_mutex_init(&mutex->pthread_mutex, &psharedm);
}
#endif
#ifdef XC_MUTEX_USE_TSRM
mutex->tsrm_mutex = tsrm_mutex_alloc();
#endif
#ifdef XC_MUTEX_USE_FCNTL
if (xc_want_inter_process()) {
xc_fcntl_init(&mutex->fcntl_mutex, pathname);
}
#endif
#ifndef NDEBUG
mutex->locked = 0;
#endif
return mutex;
}
/* }}} */
void xc_mutex_destroy(xc_mutex_t *mutex) /* {{{ */
{
assert(mutex);
/* intended to not destroy mutex when mutex is shared between process */
if (!mutex->shared) {
#ifdef XC_MUTEX_USE_PTHREAD
pthread_mutex_destroy(&mutex->pthread_mutex);
#endif
#ifdef XC_MUTEX_USE_TSRM
tsrm_mutex_free(mutex->tsrm_mutex);
#endif
}
#ifdef XC_MUTEX_USE_FCNTL
if (xc_want_inter_process()) {
xc_fcntl_destroy(&mutex->fcntl_mutex);
}
#endif
if (!mutex->shared) {
free(mutex);
}
}
/* }}} */
void xc_mutex_lock(xc_mutex_t *mutex) /* {{{ */
{
#ifdef XC_MUTEX_USE_PTHREAD
if (pthread_mutex_lock(&mutex->pthread_mutex) < 0) {
zend_error(E_ERROR, "xc_mutex failed errno:%d", errno);
}
#endif
#ifdef XC_MUTEX_USE_TSRM
if (tsrm_mutex_lock(mutex->tsrm_mutex) < 0) {
zend_error(E_ERROR, "xc_mutex failed errno:%d", errno);
}
#endif
#ifdef XC_MUTEX_USE_FCNTL
if (xc_want_inter_process()) {
xc_fcntl_mutex(&mutex->fcntl_mutex);
}
#endif
#ifndef NDEBUG
assert(!mutex->locked);
mutex->locked = 1;
assert(mutex->locked);
#endif
}
/* }}} */
void xc_mutex_unlock(xc_mutex_t *mutex) /* {{{ */
{
#ifndef NDEBUG
assert(mutex->locked);
mutex->locked = 0;
assert(!mutex->locked);
#endif
#ifdef XC_MUTEX_USE_FCNTL
if (xc_want_inter_process()) {
xc_fcntl_unlock(&mutex->fcntl_mutex);
}
#endif
#ifdef XC_MUTEX_USE_TSRM
if (tsrm_mutex_unlock(mutex->tsrm_mutex) < 0) {
zend_error(E_ERROR, "xc_mutex_unlock failed errno:%d", errno);
}
#endif
#ifdef XC_MUTEX_USE_PTHREAD
if (pthread_mutex_unlock(&mutex->pthread_mutex) < 0) {
zend_error(E_ERROR, "xc_mutex_unlock failed errno:%d", errno);
}
#endif
}
/* }}} */

18
xcache/xc_mutex.h
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#ifndef XC_MUTEX_H_1913F3DED68715D7CDA5A055E79FE0FF
#define XC_MUTEX_H_1913F3DED68715D7CDA5A055E79FE0FF
#if _MSC_VER > 1000
#pragma once
#endif /* _MSC_VER > 1000 */
#include <stdlib.h>
typedef struct _xc_mutex_t xc_mutex_t;
size_t xc_mutex_size(void);
xc_mutex_t *xc_mutex_init(xc_mutex_t *shared_mutex, const char *pathname, unsigned char want_inter_process);
void xc_mutex_destroy(xc_mutex_t *mutex);
void xc_mutex_lock(xc_mutex_t *mutex);
void xc_mutex_unlock(xc_mutex_t *mutex);
#endif /* XC_MUTEX_H_1913F3DED68715D7CDA5A055E79FE0FF */
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