linux: add eventfd and eventfd2 syscalls

isaacs · Jun 11, 2012 · 3b417d1 · 3b417d1
1 parent 78bc0d6
commit 3b417d1
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Showing 2 changed files with 46 additions and 2 deletions.
diff --git a/src/unix/linux/syscalls.c b/src/unix/linux/syscalls.c
@@ -49,6 +49,26 @@
 # endif
 #endif /* __NR_accept4 */
 
+#ifndef __NR_eventfd
+# if __x86_64__
+#  define __NR_eventfd 284
+# elif __i386__
+#  define __NR_eventfd 323
+# elif __arm__
+#  define __NR_eventfd (UV_SYSCALL_BASE + 351)
+# endif
+#endif /* __NR_eventfd */
+
+#ifndef __NR_eventfd2
+# if __x86_64__
+#  define __NR_eventfd2 290
+# elif __i386__
+#  define __NR_eventfd2 328
+# elif __arm__
+#  define __NR_eventfd2 (UV_SYSCALL_BASE + 356)
+# endif
+#endif /* __NR_eventfd2 */
+
 #ifndef __NR_inotify_init
 # if __x86_64__
 #  define __NR_inotify_init 253
@@ -147,6 +167,24 @@ int uv__accept4(int fd, struct sockaddr* addr, socklen_t* addrlen, int flags) {
 }
 
 
+int uv__eventfd(unsigned int count) {
+#if __NR_eventfd
+  return syscall(__NR_eventfd, count);
+#else
+  return errno = ENOSYS, -1;
+#endif
+}
+
+
+int uv__eventfd2(unsigned int count, int flags) {
+#if __NR_eventfd2
+  return syscall(__NR_eventfd2, count, flags);
+#else
+  return errno = ENOSYS, -1;
+#endif
+}
+
+
 int uv__inotify_init(void) {
 #if __NR_inotify_init
   return syscall(__NR_inotify_init);

diff --git a/src/unix/linux/syscalls.h b/src/unix/linux/syscalls.h
@@ -32,12 +32,16 @@
 #define UV__O_NONBLOCK        0x800
 #define UV__O_CLOEXEC         0x80000
 
-#define UV__SOCK_CLOEXEC      UV__O_CLOEXEC
-#define UV__SOCK_NONBLOCK     UV__O_NONBLOCK
+#define UV__EFD_CLOEXEC       UV__O_CLOEXEC
+#define UV__EFD_NONBLOCK      UV__O_NONBLOCK
 
 #define UV__IN_CLOEXEC        UV__O_CLOEXEC
 #define UV__IN_NONBLOCK       UV__O_NONBLOCK
 
+#define UV__SOCK_CLOEXEC      UV__O_CLOEXEC
+#define UV__SOCK_NONBLOCK     UV__O_NONBLOCK
+
+/* inotify flags */
 #define UV__IN_ACCESS         0x001
 #define UV__IN_MODIFY         0x002
 #define UV__IN_ATTRIB         0x004
@@ -65,6 +69,8 @@ struct uv__mmsghdr {
 };
 
 int uv__accept4(int fd, struct sockaddr* addr, socklen_t* addrlen, int flags);
+int uv__eventfd(unsigned int count);
+int uv__eventfd2(unsigned int count, int flags);
 int uv__inotify_init(void);
 int uv__inotify_init1(int flags);
 int uv__inotify_add_watch(int fd, const char* path, __u32 mask);