summaryrefslogtreecommitdiffstats
path: root/win/tclWinPipe.c
diff options
context:
space:
mode:
Diffstat (limited to 'win/tclWinPipe.c')
-rw-r--r--win/tclWinPipe.c144
1 files changed, 78 insertions, 66 deletions
diff --git a/win/tclWinPipe.c b/win/tclWinPipe.c
index b9b881c..a9eec6d 100644
--- a/win/tclWinPipe.c
+++ b/win/tclWinPipe.c
@@ -12,8 +12,6 @@
#include "tclWinInt.h"
-#include <sys/stat.h>
-
/*
* The following variable is used to tell whether this module has been
* initialized.
@@ -84,6 +82,12 @@ static ProcInfo *procList;
#define PIPE_EXTRABYTE (1<<3) /* The reader thread has consumed one byte. */
/*
+ * TODO: It appears the whole EXTRABYTE machinery is in place to support
+ * outdated Win 95 systems. If this can be confirmed, much code can be
+ * deleted.
+ */
+
+/*
* This structure describes per-instance data for a pipe based channel.
*/
@@ -320,7 +324,6 @@ PipeSetupProc(
PipeInfo *infoPtr;
Tcl_Time blockTime = { 0, 0 };
int block = 1;
- WinFile *filePtr;
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
if (!(flags & TCL_FILE_EVENTS)) {
@@ -334,13 +337,11 @@ PipeSetupProc(
for (infoPtr = tsdPtr->firstPipePtr; infoPtr != NULL;
infoPtr = infoPtr->nextPtr) {
if (infoPtr->watchMask & TCL_WRITABLE) {
- filePtr = (WinFile*) infoPtr->writeFile;
if (WaitForSingleObject(infoPtr->writable, 0) != WAIT_TIMEOUT) {
block = 0;
}
}
if (infoPtr->watchMask & TCL_READABLE) {
- filePtr = (WinFile*) infoPtr->readFile;
if (WaitForRead(infoPtr, 0) >= 0) {
block = 0;
}
@@ -375,7 +376,6 @@ PipeCheckProc(
{
PipeInfo *infoPtr;
PipeEvent *evPtr;
- WinFile *filePtr;
int needEvent;
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
@@ -398,13 +398,11 @@ PipeCheckProc(
*/
needEvent = 0;
- filePtr = (WinFile*) infoPtr->writeFile;
if ((infoPtr->watchMask & TCL_WRITABLE) &&
(WaitForSingleObject(infoPtr->writable, 0) != WAIT_TIMEOUT)) {
needEvent = 1;
}
- filePtr = (WinFile*) infoPtr->readFile;
if ((infoPtr->watchMask & TCL_READABLE) &&
(WaitForRead(infoPtr, 0) >= 0)) {
needEvent = 1;
@@ -475,7 +473,7 @@ TempFileName(
TCHAR name[MAX_PATH]) /* Buffer in which name for temporary file
* gets stored. */
{
- TCHAR *prefix = TEXT("TCL");
+ const TCHAR *prefix = TEXT("TCL");
if (GetTempPath(MAX_PATH, name) != 0) {
if (GetTempFileName(name, prefix, 0, name) != 0) {
return 1;
@@ -682,6 +680,7 @@ TclpCreateTempFile(
if (contents != NULL) {
DWORD result, length;
const char *p;
+ int toCopy;
/*
* Convert the contents from UTF to native encoding
@@ -689,7 +688,8 @@ TclpCreateTempFile(
native = Tcl_UtfToExternalDString(NULL, contents, -1, &dstring);
- for (p = native; *p != '\0'; p++) {
+ toCopy = Tcl_DStringLength(&dstring);
+ for (p = native; toCopy > 0; p++, toCopy--) {
if (*p == '\n') {
length = p - native;
if (length > 0) {
@@ -866,7 +866,7 @@ TclpCloseFile(
*--------------------------------------------------------------------------
*/
-unsigned long
+int
TclpGetPid(
Tcl_Pid pid) /* The HANDLE of the child process. */
{
@@ -1034,8 +1034,9 @@ TclpCreateProcess(
}
if (startInfo.hStdInput == INVALID_HANDLE_VALUE) {
TclWinConvertError(GetLastError());
- Tcl_AppendResult(interp, "couldn't duplicate input handle: ",
- Tcl_PosixError(interp), (char *) NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "couldn't duplicate input handle: %s",
+ Tcl_PosixError(interp)));
goto end;
}
@@ -1054,23 +1055,17 @@ TclpCreateProcess(
* sink.
*/
- if ((TclWinGetPlatformId() == VER_PLATFORM_WIN32_WINDOWS)
- && (applType == APPL_DOS)) {
- if (CreatePipe(&h, &startInfo.hStdOutput, &secAtts, 0) != FALSE) {
- CloseHandle(h);
- }
- } else {
- startInfo.hStdOutput = CreateFileA("NUL:", GENERIC_WRITE, 0,
- &secAtts, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
- }
+ startInfo.hStdOutput = CreateFile(TEXT("NUL:"), GENERIC_WRITE, 0,
+ &secAtts, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
} else {
DuplicateHandle(hProcess, outputHandle, hProcess,
&startInfo.hStdOutput, 0, TRUE, DUPLICATE_SAME_ACCESS);
}
if (startInfo.hStdOutput == INVALID_HANDLE_VALUE) {
TclWinConvertError(GetLastError());
- Tcl_AppendResult(interp, "couldn't duplicate output handle: ",
- Tcl_PosixError(interp), (char *) NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "couldn't duplicate output handle: %s",
+ Tcl_PosixError(interp)));
goto end;
}
@@ -1080,7 +1075,7 @@ TclpCreateProcess(
* sink.
*/
- startInfo.hStdError = CreateFileA("NUL:", GENERIC_WRITE, 0,
+ startInfo.hStdError = CreateFile(TEXT("NUL:"), GENERIC_WRITE, 0,
&secAtts, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
} else {
DuplicateHandle(hProcess, errorHandle, hProcess, &startInfo.hStdError,
@@ -1088,8 +1083,9 @@ TclpCreateProcess(
}
if (startInfo.hStdError == INVALID_HANDLE_VALUE) {
TclWinConvertError(GetLastError());
- Tcl_AppendResult(interp, "couldn't duplicate error handle: ",
- Tcl_PosixError(interp), (char *) NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "couldn't duplicate error handle: %s",
+ Tcl_PosixError(interp)));
goto end;
}
@@ -1121,7 +1117,7 @@ TclpCreateProcess(
startInfo.wShowWindow = SW_HIDE;
startInfo.dwFlags |= STARTF_USESHOWWINDOW;
createFlags = CREATE_NEW_CONSOLE;
- Tcl_DStringAppend(&cmdLine, "cmd.exe /c", -1);
+ TclDStringAppendLiteral(&cmdLine, "cmd.exe /c");
} else {
createFlags = DETACHED_PROCESS;
}
@@ -1133,9 +1129,9 @@ TclpCreateProcess(
}
if (applType == APPL_DOS) {
- Tcl_AppendResult(interp,
+ Tcl_SetObjResult(interp, Tcl_NewStringObj(
"DOS application process not supported on this platform",
- (char *) NULL);
+ -1));
Tcl_SetErrorCode(interp, "TCL", "OPERATION", "EXEC", "DOS_APP",
NULL);
goto end;
@@ -1162,12 +1158,12 @@ TclpCreateProcess(
BuildCommandLine(execPath, argc, argv, &cmdLine);
- if (CreateProcess(NULL,
- (TCHAR *) Tcl_DStringValue(&cmdLine), NULL, NULL, TRUE,
- (DWORD) createFlags, NULL, NULL, &startInfo, &procInfo) == 0) {
+ if (CreateProcess(NULL, (TCHAR *) Tcl_DStringValue(&cmdLine),
+ NULL, NULL, TRUE, (DWORD) createFlags, NULL, NULL, &startInfo,
+ &procInfo) == 0) {
TclWinConvertError(GetLastError());
- Tcl_AppendResult(interp, "couldn't execute \"", argv[0],
- "\": ", Tcl_PosixError(interp), (char *) NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf("couldn't execute \"%s\": %s",
+ argv[0], Tcl_PosixError(interp)));
goto end;
}
@@ -1296,7 +1292,7 @@ ApplicationType(
Tcl_DString nameBuf, ds;
const TCHAR *nativeName;
TCHAR nativeFullPath[MAX_PATH];
- static char extensions[][5] = {"", ".com", ".exe", ".bat"};
+ static const char extensions[][5] = {"", ".com", ".exe", ".bat"};
/*
* Look for the program as an external program. First try the name as it
@@ -1413,8 +1409,8 @@ ApplicationType(
if (applType == APPL_NONE) {
TclWinConvertError(GetLastError());
- Tcl_AppendResult(interp, "couldn't execute \"", originalName,
- "\": ", Tcl_PosixError(interp), (char *) NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf("couldn't execute \"%s\": %s",
+ originalName, Tcl_PosixError(interp)));
return APPL_NONE;
}
@@ -1471,9 +1467,9 @@ BuildCommandLine(
* Prime the path. Add a space separator if we were primed with something.
*/
- Tcl_DStringAppend(&ds, Tcl_DStringValue(linePtr), -1);
+ TclDStringAppendDString(&ds, linePtr);
if (Tcl_DStringLength(linePtr) > 0) {
- Tcl_DStringAppend(&ds, " ", 1);
+ TclDStringAppendLiteral(&ds, " ");
}
for (i = 0; i < argc; i++) {
@@ -1481,7 +1477,7 @@ BuildCommandLine(
arg = executable;
} else {
arg = argv[i];
- Tcl_DStringAppend(&ds, " ", 1);
+ TclDStringAppendLiteral(&ds, " ");
}
quote = 0;
@@ -1500,7 +1496,7 @@ BuildCommandLine(
}
}
if (quote) {
- Tcl_DStringAppend(&ds, "\"", 1);
+ TclDStringAppendLiteral(&ds, "\"");
}
start = arg;
for (special = arg; ; ) {
@@ -1529,7 +1525,7 @@ BuildCommandLine(
}
if (*special == '"') {
Tcl_DStringAppend(&ds, start, (int) (special - start));
- Tcl_DStringAppend(&ds, "\\\"", 2);
+ TclDStringAppendLiteral(&ds, "\\\"");
start = special + 1;
}
if (*special == '\0') {
@@ -1539,7 +1535,7 @@ BuildCommandLine(
}
Tcl_DStringAppend(&ds, start, (int) (special - start));
if (quote) {
- Tcl_DStringAppend(&ds, "\"", 1);
+ TclDStringAppendLiteral(&ds, "\"");
}
}
Tcl_DStringFree(linePtr);
@@ -1677,8 +1673,8 @@ Tcl_CreatePipe(
if (!CreatePipe(&readHandle, &writeHandle, &sec, 0)) {
TclWinConvertError(GetLastError());
- Tcl_AppendResult(interp, "pipe creation failed: ",
- Tcl_PosixError(interp), NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "pipe creation failed: %s", Tcl_PosixError(interp)));
return TCL_ERROR;
}
@@ -1715,8 +1711,8 @@ TclGetAndDetachPids(
{
PipeInfo *pipePtr;
const Tcl_ChannelType *chanTypePtr;
+ Tcl_Obj *pidsObj;
int i;
- char buf[TCL_INTEGER_SPACE];
/*
* Punt if the channel is not a command channel.
@@ -1727,12 +1723,15 @@ TclGetAndDetachPids(
return;
}
- pipePtr = (PipeInfo *) Tcl_GetChannelInstanceData(chan);
+ pipePtr = Tcl_GetChannelInstanceData(chan);
+ TclNewObj(pidsObj);
for (i = 0; i < pipePtr->numPids; i++) {
- wsprintfA(buf, "%lu", TclpGetPid(pipePtr->pidPtr[i]));
- Tcl_AppendElement(interp, buf);
- Tcl_DetachPids(1, &(pipePtr->pidPtr[i]));
+ Tcl_ListObjAppendElement(NULL, pidsObj,
+ Tcl_NewWideIntObj((unsigned)
+ TclpGetPid(pipePtr->pidPtr[i])));
+ Tcl_DetachPids(1, &pipePtr->pidPtr[i]);
}
+ Tcl_SetObjResult(interp, pidsObj);
if (pipePtr->numPids > 0) {
ckfree(pipePtr->pidPtr);
pipePtr->numPids = 0;
@@ -1879,12 +1878,26 @@ PipeClose2Proc(
&& (pipePtr->writeFile != NULL)) {
if (pipePtr->writeThread) {
/*
- * Wait for the writer thread to finish the current buffer, then
- * terminate the thread and close the handles. If the channel is
- * nonblocking, there should be no pending write operations.
+ * Wait for the writer thread to finish the current buffer, then
+ * terminate the thread and close the handles. If the channel is
+ * nonblocking but blocked during exit, bail out since the worker
+ * thread is not interruptible and we want TIP#398-fast-exit.
*/
+ if (TclInExit()
+ && (pipePtr->flags & PIPE_ASYNC)) {
- WaitForSingleObject(pipePtr->writable, INFINITE);
+ /* give it a chance to leave honorably */
+ SetEvent(pipePtr->stopWriter);
+
+ if (WaitForSingleObject(pipePtr->writable, 0) == WAIT_TIMEOUT) {
+ return EWOULDBLOCK;
+ }
+
+ } else {
+
+ WaitForSingleObject(pipePtr->writable, INFINITE);
+
+ }
/*
* The thread may already have closed on it's own. Check its exit
@@ -2154,7 +2167,7 @@ PipeOutputProc(
* the channel is in non-blocking mode.
*/
- errno = EAGAIN;
+ errno = EWOULDBLOCK;
goto error;
}
@@ -2239,7 +2252,6 @@ PipeEventProc(
{
PipeEvent *pipeEvPtr = (PipeEvent *)evPtr;
PipeInfo *infoPtr;
- WinFile *filePtr;
int mask;
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
@@ -2276,14 +2288,12 @@ PipeEventProc(
* detected EOF.
*/
- filePtr = (WinFile*) ((PipeInfo*)infoPtr)->writeFile;
mask = 0;
if ((infoPtr->watchMask & TCL_WRITABLE) &&
(WaitForSingleObject(infoPtr->writable, 0) != WAIT_TIMEOUT)) {
mask = TCL_WRITABLE;
}
- filePtr = (WinFile*) ((PipeInfo*)infoPtr)->readFile;
if ((infoPtr->watchMask & TCL_READABLE) && (WaitForRead(infoPtr,0) >= 0)) {
if (infoPtr->readFlags & PIPE_EOF) {
mask = TCL_READABLE;
@@ -2635,15 +2645,13 @@ Tcl_PidObjCmd(
PipeInfo *pipePtr;
int i;
Tcl_Obj *resultPtr;
- char buf[TCL_INTEGER_SPACE];
if (objc > 2) {
Tcl_WrongNumArgs(interp, 1, objv, "?channelId?");
return TCL_ERROR;
}
if (objc == 1) {
- wsprintfA(buf, "%lu", (unsigned long) getpid());
- Tcl_SetObjResult(interp, Tcl_NewStringObj(buf, -1));
+ Tcl_SetObjResult(interp, Tcl_NewWideIntObj((unsigned) getpid()));
} else {
chan = Tcl_GetChannel(interp, Tcl_GetStringFromObj(objv[1], NULL),
NULL);
@@ -2658,9 +2666,9 @@ Tcl_PidObjCmd(
pipePtr = (PipeInfo *) Tcl_GetChannelInstanceData(chan);
resultPtr = Tcl_NewObj();
for (i = 0; i < pipePtr->numPids; i++) {
- wsprintfA(buf, "%lu", TclpGetPid(pipePtr->pidPtr[i]));
Tcl_ListObjAppendElement(/*interp*/ NULL, resultPtr,
- Tcl_NewStringObj(buf, -1));
+ Tcl_NewWideIntObj((unsigned)
+ TclpGetPid(pipePtr->pidPtr[i])));
}
Tcl_SetObjResult(interp, resultPtr);
}
@@ -2710,7 +2718,7 @@ WaitForRead(
* is in non-blocking mode.
*/
- errno = EAGAIN;
+ errno = EWOULDBLOCK;
return -1;
}
@@ -2952,6 +2960,10 @@ PipeWriterThread(
* an error, so exit.
*/
+ if (waitResult == WAIT_OBJECT_0) {
+ SetEvent(infoPtr->writable);
+ }
+
break;
}
@@ -3101,7 +3113,7 @@ TclpOpenTemporaryFile(
namePtr += Tcl_DStringLength(&buf);
Tcl_DStringFree(&buf);
} else {
- TCHAR *baseStr = TEXT("TCL");
+ const TCHAR *baseStr = TEXT("TCL");
int length = 3 * sizeof(TCHAR);
memcpy(namePtr, baseStr, length);
generated by cgit v0.12 at 2025-11-03 13:21:16 (GMT)