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authorshyouhei <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2008-06-15 13:49:29 +0000
committershyouhei <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2008-06-15 13:49:29 +0000
commit46149188656f5c2560a0fd78d077c145db0d1d95 (patch)
treeb45012bbf456a39d30c04171a0bf43b67f5be4e3
parent81ac0c5711773028f0901f06ac71eded2cf2f2a9 (diff)
merge revision(s) 16379:
* win32/win32.c (rb_w32_select): backport from trunk. [ruby-talk:300743] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8_5@17288 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
-rw-r--r--ChangeLog5
-rw-r--r--version.h2
-rw-r--r--win32/win32.c276
3 files changed, 227 insertions, 56 deletions
diff --git a/ChangeLog b/ChangeLog
index 9a65925..783c7ca 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sun Jun 15 22:49:12 2008 NAKAMURA Usaku <usa@ruby-lang.org>
+
+ * win32/win32.c (rb_w32_select): backport from trunk.
+ [ruby-talk:300743]
+
Sun Jun 15 22:47:37 2008 Nobuyoshi Nakada <nobu@ruby-lang.org>
* lib/delegate.rb (SimpleDelegator::dup): removed needless argument.
diff --git a/version.h b/version.h
index fb272fa..c5b7dcc 100644
--- a/version.h
+++ b/version.h
@@ -2,7 +2,7 @@
#define RUBY_RELEASE_DATE "2008-06-15"
#define RUBY_VERSION_CODE 185
#define RUBY_RELEASE_CODE 20080615
-#define RUBY_PATCHLEVEL 205
+#define RUBY_PATCHLEVEL 206
#define RUBY_VERSION_MAJOR 1
#define RUBY_VERSION_MINOR 8
diff --git a/win32/win32.c b/win32/win32.c
index f9c1af5..b408676 100644
--- a/win32/win32.c
+++ b/win32/win32.c
@@ -371,6 +371,7 @@ static void invalid_parameter(const wchar_t *expr, const wchar_t *func, const wc
}
#endif
+static CRITICAL_SECTION select_mutex;
static BOOL fWinsock;
static char *envarea;
static void
@@ -384,6 +385,7 @@ exit_handler(void)
FreeEnvironmentStrings(envarea);
envarea = NULL;
}
+ DeleteCriticalSection(&select_mutex);
}
static void
@@ -472,6 +474,8 @@ NtInitialize(int *argc, char ***argv)
init_stdhandle();
+ InitializeCriticalSection(&select_mutex);
+
atexit(exit_handler);
// Initialize Winsock
@@ -2043,87 +2047,250 @@ rb_w32_fdisset(int fd, fd_set *set)
static int NtSocketsInitialized = 0;
static int
-extract_file_fd(fd_set *set, fd_set *fileset)
+extract_fd(fd_set *dst, fd_set *src, int (*func)(SOCKET))
{
- int idx;
+ int s = 0;
+ if (!src || !dst) return 0;
- fileset->fd_count = 0;
- if (!set)
- return 0;
- for (idx = 0; idx < set->fd_count; idx++) {
- SOCKET fd = set->fd_array[idx];
+ while (s < src->fd_count) {
+ SOCKET fd = src->fd_array[s];
- if (!is_socket(fd)) {
- int i;
+ if (!func || (*func)(fd)) { /* move it to dst */
+ int d;
- for (i = 0; i < fileset->fd_count; i++) {
- if (fileset->fd_array[i] == fd) {
- break;
- }
+ for (d = 0; d < dst->fd_count; d++) {
+ if (dst->fd_array[d] == fd) break;
}
- if (i == fileset->fd_count) {
- if (fileset->fd_count < FD_SETSIZE) {
- fileset->fd_array[i] = fd;
- fileset->fd_count++;
- }
+ if (d == dst->fd_count && dst->fd_count < FD_SETSIZE) {
+ dst->fd_array[dst->fd_count++] = fd;
+ }
+ memmove(
+ &src->fd_array[s],
+ &src->fd_array[s+1],
+ sizeof(src->fd_array[0]) * (--src->fd_count - s));
+ }
+ else s++;
+ }
+
+ return dst->fd_count;
+}
+
+static int
+is_not_socket(SOCKET sock)
+{
+ return !is_socket(sock);
+}
+
+static int
+is_pipe(SOCKET sock) /* DONT call this for SOCKET! it clains it is PIPE. */
+{
+ int ret;
+
+ RUBY_CRITICAL(
+ ret = (GetFileType((HANDLE)sock) == FILE_TYPE_PIPE)
+ );
+
+ return ret;
+}
+
+static int
+is_readable_pipe(SOCKET sock) /* call this for pipe only */
+{
+ int ret;
+ DWORD n = 0;
+
+ RUBY_CRITICAL(
+ if (PeekNamedPipe((HANDLE)sock, NULL, 0, NULL, &n, NULL)) {
+ ret = (n > 0);
+ }
+ else {
+ ret = (GetLastError() == ERROR_BROKEN_PIPE); /* pipe was closed */
+ }
+ );
+
+ return ret;
+}
+
+static int
+is_console(SOCKET sock) /* DONT call this for SOCKET! */
+{
+ int ret;
+ DWORD n = 0;
+ INPUT_RECORD ir;
+
+ RUBY_CRITICAL(
+ ret = (PeekConsoleInput((HANDLE)sock, &ir, 1, &n))
+ );
+
+ return ret;
+}
+
+static int
+is_readable_console(SOCKET sock) /* call this for console only */
+{
+ int ret = 0;
+ DWORD n = 0;
+ INPUT_RECORD ir;
+
+ RUBY_CRITICAL(
+ if (PeekConsoleInput((HANDLE)sock, &ir, 1, &n) && n > 0) {
+ if (ir.EventType == KEY_EVENT && ir.Event.KeyEvent.bKeyDown &&
+ ir.Event.KeyEvent.uChar.AsciiChar) {
+ ret = 1;
+ }
+ else {
+ ReadConsoleInput((HANDLE)sock, &ir, 1, &n);
+ }
+ }
+ );
+
+ return ret;
+}
+
+static int
+do_select(int nfds, fd_set *rd, fd_set *wr, fd_set *ex,
+ struct timeval *timeout)
+{
+ int r = 0;
+
+ if (nfds == 0) {
+ if (timeout)
+ rb_w32_sleep(timeout->tv_sec * 1000 + timeout->tv_usec / 1000);
+ else
+ rb_w32_sleep(INFINITE);
+ }
+ else {
+ RUBY_CRITICAL(
+ EnterCriticalSection(&select_mutex);
+ r = select(nfds, rd, wr, ex, timeout);
+ LeaveCriticalSection(&select_mutex);
+ if (r == SOCKET_ERROR) {
+ errno = map_errno(WSAGetLastError());
+ r = -1;
}
+ );
+ }
+
+ return r;
+}
+
+static inline int
+subst(struct timeval *rest, const struct timeval *wait)
+{
+ while (rest->tv_usec < wait->tv_usec) {
+ if (rest->tv_sec <= wait->tv_sec) {
+ return 0;
}
+ rest->tv_sec -= 1;
+ rest->tv_usec += 1000 * 1000;
}
- return fileset->fd_count;
+ rest->tv_sec -= wait->tv_sec;
+ rest->tv_usec -= wait->tv_usec;
+ return 1;
}
+static inline int
+compare(const struct timeval *t1, const struct timeval *t2)
+{
+ if (t1->tv_sec < t2->tv_sec)
+ return -1;
+ if (t1->tv_sec > t2->tv_sec)
+ return 1;
+ if (t1->tv_usec < t2->tv_usec)
+ return -1;
+ if (t1->tv_usec > t2->tv_usec)
+ return 1;
+ return 0;
+}
+
+#undef Sleep
long
rb_w32_select (int nfds, fd_set *rd, fd_set *wr, fd_set *ex,
struct timeval *timeout)
{
long r;
- fd_set file_rd;
- fd_set file_wr;
-#ifdef USE_INTERRUPT_WINSOCK
- fd_set trap;
-#endif /* USE_INTERRUPT_WINSOCK */
- int file_nfds;
+ fd_set pipe_rd;
+ fd_set cons_rd;
+ fd_set else_rd;
+ fd_set else_wr;
+ int nonsock = 0;
+ if (nfds < 0 || (timeout && (timeout->tv_sec < 0 || timeout->tv_usec < 0))) {
+ errno = EINVAL;
+ return -1;
+ }
if (!NtSocketsInitialized) {
StartSockets();
}
+
+ // assume else_{rd,wr} (other than socket, pipe reader, console reader)
+ // are always readable/writable. but this implementation still has
+ // problem. if pipe's buffer is full, writing to pipe will block
+ // until some data is read from pipe. but ruby is single threaded system,
+ // so whole system will be blocked forever.
+
+ else_rd.fd_count = 0;
+ nonsock += extract_fd(&else_rd, rd, is_not_socket);
+
+ pipe_rd.fd_count = 0;
+ extract_fd(&pipe_rd, &else_rd, is_pipe); // should not call is_pipe for socket
+
+ cons_rd.fd_count = 0;
+ extract_fd(&cons_rd, &else_rd, is_console); // ditto
+
+ else_wr.fd_count = 0;
+ nonsock += extract_fd(&else_wr, wr, is_not_socket);
+
r = 0;
if (rd && rd->fd_count > r) r = rd->fd_count;
if (wr && wr->fd_count > r) r = wr->fd_count;
if (ex && ex->fd_count > r) r = ex->fd_count;
if (nfds > r) nfds = r;
- if (nfds == 0 && timeout) {
- Sleep(timeout->tv_sec * 1000 + timeout->tv_usec / 1000);
- return 0;
- }
- file_nfds = extract_file_fd(rd, &file_rd);
- file_nfds += extract_file_fd(wr, &file_wr);
- if (file_nfds)
+
{
- // assume normal files are always readable/writable
- // fake read/write fd_set and return value
- if (rd) *rd = file_rd;
- if (wr) *wr = file_wr;
- return file_nfds;
- }
+ struct timeval rest;
+ struct timeval wait;
+ struct timeval zero;
+ if (timeout) rest = *timeout;
+ wait.tv_sec = 0; wait.tv_usec = 10 * 1000; // 10ms
+ zero.tv_sec = 0; zero.tv_usec = 0; // 0ms
+ do {
+ if (nonsock) {
+ // modifying {else,pipe,cons}_rd is safe because
+ // if they are modified, function returns immediately.
+ extract_fd(&else_rd, &pipe_rd, is_readable_pipe);
+ extract_fd(&else_rd, &cons_rd, is_readable_console);
+ }
-#if USE_INTERRUPT_WINSOCK
- if (ex)
- trap = *ex;
- else
- trap.fd_count = 0;
- if (trap.fd_count < FD_SETSIZE)
- trap.fd_array[trap.fd_count++] = (SOCKET)interrupted_event;
- // else unable to catch interrupt.
- ex = &trap;
-#endif /* USE_INTERRUPT_WINSOCK */
+ if (else_rd.fd_count || else_wr.fd_count) {
+ r = do_select(nfds, rd, wr, ex, &zero); // polling
+ if (r < 0) break; // XXX: should I ignore error and return signaled handles?
+ r += extract_fd(rd, &else_rd, NULL); // move all
+ r += extract_fd(wr, &else_wr, NULL); // move all
+ break;
+ }
+ else {
+ struct timeval *dowait =
+ compare(&rest, &wait) < 0 ? &rest : &wait;
+
+ fd_set orig_rd;
+ fd_set orig_wr;
+ fd_set orig_ex;
+ if (rd) orig_rd = *rd;
+ if (wr) orig_wr = *wr;
+ if (ex) orig_ex = *ex;
+ r = do_select(nfds, rd, wr, ex, &zero); // polling
+ if (r != 0) break; // signaled or error
+ if (rd) *rd = orig_rd;
+ if (wr) *wr = orig_wr;
+ if (ex) *ex = orig_ex;
+
+ // XXX: should check the time select spent
+ Sleep(dowait->tv_sec * 1000 + dowait->tv_usec / 1000);
+ }
+ } while (!timeout || subst(&rest, &wait));
+ }
- RUBY_CRITICAL({
- r = select(nfds, rd, wr, ex, timeout);
- if (r == SOCKET_ERROR) {
- errno = map_errno(WSAGetLastError());
- }
- });
return r;
}
@@ -3258,7 +3425,6 @@ rb_w32_times(struct tms *tmbuf)
return 0;
}
-#undef Sleep
#define yield_once() Sleep(0)
#define yield_until(condition) do yield_once(); while (!(condition))