Menu
▾
▴
[libcw-cvs] [CVS] Module src
|
From: Carlo W. <li...@us...> - 2002-01-31 04:45:05
|
CVSROOT : /cvsroot/libcw
Module : src
Commit time: 2002-00-31 04:45:04 UTC
Added files:
libcwd/README.threads libcwd/wrapcnclpnts.c
Log message:
Work in progress. Going to detect calls to cancellation points while
in deferred cancel mode inside a critical area without an installed
cleanup routine.
---------------------- diff included ----------------------
Index: src/libcwd/README.threads
diff -u /dev/null src/libcwd/README.threads:1.1
--- /dev/null Wed Jan 30 20:45:04 2002
+++ src/libcwd/README.threads Wed Jan 30 20:44:54 2002
@@ -0,0 +1,6 @@
+glibc-2.2.4 defines the following cancellable syscalls:
+
+accept close connect fcntl fsync lseek lseek64 msync nanosleep
+open open64 pause pread pread64 pwrite pwrite64 read recv recvfrom
+recvmsg send sendmsg sendto system tcdrain wait waitpid write
+
Index: src/libcwd/wrapcnclpnts.c
diff -u /dev/null src/libcwd/wrapcnclpnts.c:1.1
--- /dev/null Wed Jan 30 20:45:04 2002
+++ src/libcwd/wrapcnclpnts.c Wed Jan 30 20:44:54 2002
@@ -0,0 +1,113 @@
+#define __USE_LARGEFILE64
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <pthread.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <termios.h>
+#include <sys/resource.h>
+#include <sys/wait.h>
+#include <sys/socket.h>
+
+#define CANCELABLE_SYSCALL(res_type, name, param_list, params) \
+res_type __libc_##name param_list; \
+res_type \
+__attribute__ ((weak)) \
+name param_list \
+{ \
+ res_type result; \
+ int oldtype; \
+ pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, &oldtype); \
+ result = __libc_##name params; \
+ pthread_setcanceltype (oldtype, NULL); \
+ return result; \
+}
+
+#define CANCELABLE_SYSCALL_VA(res_type, name, param_list, params, last_arg) \
+res_type __libc_##name param_list; \
+res_type \
+__attribute__ ((weak)) \
+name param_list \
+{ \
+ res_type result; \
+ int oldtype; \
+ va_list ap; \
+ pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, &oldtype); \
+ va_start (ap, last_arg); \
+ result = __libc_##name params; \
+ va_end (ap); \
+ pthread_setcanceltype (oldtype, NULL); \
+ return result; \
+}
+
+#define strong_alias(name, aliasname) extern __typeof (name) aliasname __attribute__ ((alias (#name)));
+
+CANCELABLE_SYSCALL (int, close, (int fd), (fd))
+strong_alias (close, __close)
+
+CANCELABLE_SYSCALL_VA (int, fcntl, (int fd, int cmd, ...), (fd, cmd, va_arg (ap, long int)), cmd)
+strong_alias (fcntl, __fcntl)
+
+CANCELABLE_SYSCALL (int, fsync, (int fd), (fd))
+
+CANCELABLE_SYSCALL (off_t, lseek, (int fd, off_t offset, int whence), (fd, offset, whence))
+strong_alias (lseek, __lseek)
+
+//CANCELABLE_SYSCALL (off64_t, lseek64, (int fd, off64_t offset, int whence), (fd, offset, whence))
+
+CANCELABLE_SYSCALL (int, msync, (__ptr_t addr, size_t length, int flags), (addr, length, flags))
+
+CANCELABLE_SYSCALL (int, nanosleep, (const struct timespec *requested_time, struct timespec *remaining), (requested_time, remaining))
+
+CANCELABLE_SYSCALL_VA (int, open, (const char *pathname, int flags, ...), (pathname, flags, va_arg (ap, mode_t)), flags)
+strong_alias (open, __open)
+
+CANCELABLE_SYSCALL_VA (int, open64, (const char *pathname, int flags, ...), (pathname, flags, va_arg (ap, mode_t)), flags)
+strong_alias (open64, __open64)
+
+CANCELABLE_SYSCALL (int, pause, (void), ())
+
+CANCELABLE_SYSCALL (ssize_t, pread, (int fd, void *buf, size_t count, off_t offset), (fd, buf, count, offset))
+
+//CANCELABLE_SYSCALL (ssize_t, pread64, (int fd, void *buf, size_t count, off64_t offset), (fd, buf, count, offset))
+//strong_alias (pread64, __pread64)
+
+CANCELABLE_SYSCALL (ssize_t, pwrite, (int fd, const void *buf, size_t n, off_t offset), (fd, buf, n, offset))
+
+//CANCELABLE_SYSCALL (ssize_t, pwrite64, (int fd, const void *buf, size_t n, off64_t offset), (fd, buf, n, offset))
+//strong_alias (pwrite64, __pwrite64)
+
+CANCELABLE_SYSCALL (ssize_t, read, (int fd, void *buf, size_t count), (fd, buf, count))
+strong_alias (read, __read)
+
+CANCELABLE_SYSCALL (int, system, (const char *line), (line))
+
+CANCELABLE_SYSCALL (int, tcdrain, (int fd), (fd))
+
+CANCELABLE_SYSCALL (__pid_t, wait, (__WAIT_STATUS_DEFN stat_loc), (stat_loc))
+strong_alias (wait, __wait)
+
+CANCELABLE_SYSCALL (__pid_t, waitpid, (__pid_t pid, int *stat_loc, int options), (pid, stat_loc, options))
+
+CANCELABLE_SYSCALL (ssize_t, write, (int fd, const void *buf, size_t n), (fd, buf, n))
+strong_alias (write, __write)
+
+CANCELABLE_SYSCALL (int, accept, (int fd, __SOCKADDR_ARG addr, socklen_t *addr_len), (fd, addr, addr_len))
+
+CANCELABLE_SYSCALL (int, connect, (int fd, __CONST_SOCKADDR_ARG addr, socklen_t len), (fd, addr, len))
+strong_alias (connect, __connect)
+
+CANCELABLE_SYSCALL (ssize_t, recv, (int fd, __ptr_t buf, size_t n, int flags), (fd, buf, n, flags))
+
+CANCELABLE_SYSCALL (ssize_t, recvfrom, (int fd, __ptr_t buf, size_t n, int flags, __SOCKADDR_ARG addr, socklen_t *addr_len), (fd, buf, n, flags, addr, addr_len))
+
+CANCELABLE_SYSCALL (ssize_t, recvmsg, (int fd, struct msghdr *message, int flags), (fd, message, flags))
+
+CANCELABLE_SYSCALL (ssize_t, send, (int fd, const __ptr_t buf, size_t n, int flags), (fd, buf, n, flags))
+strong_alias (send, __send)
+
+CANCELABLE_SYSCALL (ssize_t, sendmsg, (int fd, const struct msghdr *message, int flags), (fd, message, flags))
+
+CANCELABLE_SYSCALL (ssize_t, sendto, (int fd, const __ptr_t buf, size_t n, int flags, __CONST_SOCKADDR_ARG addr, socklen_t addr_len), (fd, buf, n, flags, addr, addr_len))
----------------------- End of diff -----------------------
|
