Delete bundled copy of NSS and replace with README.

nspr/pr/src/md/windows/w32ipcsem.c

Index: nspr/pr/src/md/windows/w32ipcsem.c
diff --git a/nspr/pr/src/md/windows/w32ipcsem.c b/nspr/pr/src/md/windows/w32ipcsem.c
deleted file mode 100644
index 954591002cdb2eb058e7416969783aa45e759787..0000000000000000000000000000000000000000
--- a/nspr/pr/src/md/windows/w32ipcsem.c
+++ /dev/null
@@ -1,228 +0,0 @@
-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-/*
- * File: w32ipcsem.c
- * Description: implements named semaphores for NT and WIN95.
- */
-
-#include "primpl.h"
-
-#ifdef WINCE
-static HANDLE OpenSemaphore(DWORD inDesiredAccess,
-                            BOOL inInheritHandle,
-                            const char *inName)
-{
-    HANDLE retval = NULL;
-    HANDLE semaphore = NULL;
-    PRUnichar wideName[MAX_PATH];  /* name size is limited to MAX_PATH */
-    
-    MultiByteToWideChar(CP_ACP, 0, inName, -1, wideName, MAX_PATH);
-    /* 0x7fffffff is the max count for our semaphore */
-    semaphore = CreateSemaphoreW(NULL, 0, 0x7fffffff, wideName);
-    if (NULL != semaphore) {
-        DWORD lastErr = GetLastError();
-      
-        if (ERROR_ALREADY_EXISTS != lastErr)
-            CloseHandle(semaphore);
-        else
-            retval = semaphore;
-    }
-    return retval;
-}
-#endif
-
-/*
- * NSPR-to-NT access right mapping table for semaphore objects.
- *
- * The SYNCHRONIZE access is required by WaitForSingleObject.
- * The SEMAPHORE_MODIFY_STATE access is required by ReleaseSemaphore.
- * The OR of these three access masks must equal SEMAPHORE_ALL_ACCESS.
- * This is because if a semaphore object with the specified name
- * exists, CreateSemaphore requests SEMAPHORE_ALL_ACCESS access to
- * the existing object.
- */
-static DWORD semAccessTable[] = {
-    STANDARD_RIGHTS_REQUIRED|0x1, /* read (0x1 is "query state") */
-    STANDARD_RIGHTS_REQUIRED|SYNCHRONIZE|SEMAPHORE_MODIFY_STATE, /* write */
-    0 /* execute */
-};
-
-#ifndef _PR_GLOBAL_THREADS_ONLY
-
-/*
- * A fiber cannot call WaitForSingleObject because that
- * will block the other fibers running on the same thread.
- * If a fiber needs to wait on a (semaphore) handle, we
- * create a native thread to call WaitForSingleObject and
- * have the fiber join the native thread.
- */
-
-/*
- * Arguments, return value, and error code for WaitForSingleObject
- */
-struct WaitSingleArg {
-    HANDLE handle;
-    DWORD timeout;
-    DWORD rv;
-    DWORD error;
-};
-
-static void WaitSingleThread(void *arg)
-{
-    struct WaitSingleArg *warg = (struct WaitSingleArg *) arg;
-
-    warg->rv = WaitForSingleObject(warg->handle, warg->timeout);
-    if (warg->rv == WAIT_FAILED) {
-        warg->error = GetLastError();
-    }
-}
-
-static DWORD FiberSafeWaitForSingleObject(
-    HANDLE hHandle,
-    DWORD dwMilliseconds
-)
-{
-    PRThread *me = _PR_MD_CURRENT_THREAD();
-
-    if (_PR_IS_NATIVE_THREAD(me)) {
-        return WaitForSingleObject(hHandle, dwMilliseconds);
-    } else {
-        PRThread *waitThread;
-        struct WaitSingleArg warg;
-        PRStatus rv;
-
-        warg.handle = hHandle;
-        warg.timeout = dwMilliseconds;
-        waitThread = PR_CreateThread(
-            PR_USER_THREAD, WaitSingleThread, &warg,
-            PR_PRIORITY_NORMAL, PR_GLOBAL_THREAD, PR_JOINABLE_THREAD, 0);
-        if (waitThread == NULL) {
-            return WAIT_FAILED;
-        }
-
-        rv = PR_JoinThread(waitThread);
-        PR_ASSERT(rv == PR_SUCCESS);
-        if (rv == PR_FAILURE) {
-            return WAIT_FAILED;
-        }
-        if (warg.rv == WAIT_FAILED) {
-            SetLastError(warg.error);
-        }
-        return warg.rv;
-    }
-}
-
-#endif /* !_PR_GLOBAL_THREADS_ONLY */
-
-PRSem *_PR_MD_OPEN_SEMAPHORE(
-    const char *osname, PRIntn flags, PRIntn mode, PRUintn value)
-{
-    PRSem *sem;
-    SECURITY_ATTRIBUTES sa;
-    LPSECURITY_ATTRIBUTES lpSA = NULL;
-    PSECURITY_DESCRIPTOR pSD = NULL;
-    PACL pACL = NULL;
-
-    sem = PR_NEW(PRSem);
-    if (sem == NULL) {
-        PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);
-        return NULL;
-    }
-    if (flags & PR_SEM_CREATE) {
-        if (_PR_NT_MakeSecurityDescriptorACL(mode, semAccessTable,
-                &pSD, &pACL) == PR_SUCCESS) {
-            sa.nLength = sizeof(sa);
-            sa.lpSecurityDescriptor = pSD;
-            sa.bInheritHandle = FALSE;
-            lpSA = &sa;
-        }
-#ifdef WINCE
-        {
-            /* The size of a sem's name is limited to MAX_PATH. */
-            PRUnichar wosname[MAX_PATH]; 
-            MultiByteToWideChar(CP_ACP, 0, osname, -1, wosname, MAX_PATH);
-            sem->sem = CreateSemaphoreW(lpSA, value, 0x7fffffff, wosname);
-        }
-#else
-        sem->sem = CreateSemaphoreA(lpSA, value, 0x7fffffff, osname);
-#endif
-        if (lpSA != NULL) {
-            _PR_NT_FreeSecurityDescriptorACL(pSD, pACL);
-        }
-        if (sem->sem == NULL) {
-            _PR_MD_MAP_DEFAULT_ERROR(GetLastError());
-            PR_DELETE(sem);
-            return NULL;
-        }
-        if ((flags & PR_SEM_EXCL) && (GetLastError() == ERROR_ALREADY_EXISTS)) {
-            PR_SetError(PR_FILE_EXISTS_ERROR, ERROR_ALREADY_EXISTS);
-            CloseHandle(sem->sem);
-            PR_DELETE(sem);
-            return NULL;
-        }
-    } else {
-        sem->sem = OpenSemaphore(
-                SEMAPHORE_MODIFY_STATE|SYNCHRONIZE, FALSE, osname);
-        if (sem->sem == NULL) {
-            DWORD err = GetLastError();
-
-            /*
-             * If we open a nonexistent named semaphore, NT
-             * returns ERROR_FILE_NOT_FOUND, while Win95
-             * returns ERROR_INVALID_NAME
-             */
-            if (err == ERROR_INVALID_NAME) {
-                PR_SetError(PR_FILE_NOT_FOUND_ERROR, err);
-            } else {
-                _PR_MD_MAP_DEFAULT_ERROR(GetLastError());
-            }
-            PR_DELETE(sem);
-            return NULL;
-        }
-    }
-    return sem;
-}
-
-PRStatus _PR_MD_WAIT_SEMAPHORE(PRSem *sem)
-{
-    DWORD rv;
-
-#ifdef _PR_GLOBAL_THREADS_ONLY
-    rv = WaitForSingleObject(sem->sem, INFINITE);
-#else
-    rv = FiberSafeWaitForSingleObject(sem->sem, INFINITE);
-#endif
-    PR_ASSERT(rv == WAIT_FAILED || rv == WAIT_OBJECT_0);
-    if (rv == WAIT_FAILED) {
-        _PR_MD_MAP_DEFAULT_ERROR(GetLastError());
-        return PR_FAILURE;
-    }
-    if (rv != WAIT_OBJECT_0) {
-        /* Should not happen */
-        PR_SetError(PR_UNKNOWN_ERROR, 0);
-        return PR_FAILURE;
-    }
-    return PR_SUCCESS;
-}
-
-PRStatus _PR_MD_POST_SEMAPHORE(PRSem *sem)
-{
-    if (ReleaseSemaphore(sem->sem, 1, NULL) == FALSE) {
-        _PR_MD_MAP_DEFAULT_ERROR(GetLastError());
-        return PR_FAILURE;
-    }
-    return PR_SUCCESS;
-}
-
-PRStatus _PR_MD_CLOSE_SEMAPHORE(PRSem *sem)
-{
-    if (CloseHandle(sem->sem) == FALSE) {
-        _PR_MD_MAP_CLOSE_ERROR(GetLastError());
-        return PR_FAILURE;
-    }
-    PR_DELETE(sem);
-    return PR_SUCCESS;
-}