internal static unsafe _WinInetCache.Status GetAndLockFile(string key, byte* entryPtr, ref int entryBufSize, out SafeUnlockUrlCacheEntryFile handle)
{
if (ValidationHelper.IsBlankString(key))
{
throw new ArgumentNullException("key");
}
handle = new SafeUnlockUrlCacheEntryFile(key);
fixed (char* str = ((char*) key))
{
char* chPtr = str;
return MustRunGetAndLockFile(chPtr, entryPtr, ref entryBufSize, handle);
}
}
internal static unsafe _WinInetCache.Status GetAndLockFile(string key, byte *entryPtr, ref int entryBufSize, out SafeUnlockUrlCacheEntryFile handle)
{
if (ValidationHelper.IsBlankString(key))
{
throw new ArgumentNullException("key");
}
handle = new SafeUnlockUrlCacheEntryFile(key);
fixed(char *str = ((char *)key))
{
char *chPtr = str;
return(MustRunGetAndLockFile(chPtr, entryPtr, ref entryBufSize, handle));
}
}
private static unsafe _WinInetCache.Status MustRunGetAndLockFile(char* key, byte* entryPtr, ref int entryBufSize, SafeUnlockUrlCacheEntryFile handle)
{
_WinInetCache.Status success = _WinInetCache.Status.Success;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
}
finally
{
if (!UnsafeNclNativeMethods.SafeNetHandles.RetrieveUrlCacheEntryFileW(key, entryPtr, ref entryBufSize, 0))
{
success = (_WinInetCache.Status) Marshal.GetLastWin32Error();
handle.SetHandleAsInvalid();
}
else
{
handle.SetHandle((IntPtr) 1);
}
}
return success;
}
//
// Whis will check the result from PInvoke and make a valid safeHandle on success
//
unsafe private static _WinInetCache.Status MustRunGetAndLockFile(char* key, byte* entryPtr, ref int entryBufSize, SafeUnlockUrlCacheEntryFile handle) {
_WinInetCache.Status error = _WinInetCache.Status.Success;
// Run the body of this method as a non-interruptible block.
RuntimeHelpers.PrepareConstrainedRegions();
try {} finally {
if (!UnsafeNclNativeMethods.SafeNetHandles.RetrieveUrlCacheEntryFileW(key, entryPtr, ref entryBufSize, 0))
{
error = (_WinInetCache.Status)Marshal.GetLastWin32Error();
handle.SetHandleAsInvalid();
}
else {
// Hack: that will return 1 in place of a handle
// The real handle here is a "key" string
handle.SetHandle((IntPtr)1);
}
}
return error;
}
internal ReadStream(_WinInetCache.Entry entry, SafeUnlockUrlCacheEntryFile handle, bool async) : base(entry.Filename, FileMode.Open, FileAccess.Read, ComNetOS.IsWinNt ? (FileShare.Delete | FileShare.Read) : FileShare.Read, 0x1000, async)
{
this.m_Key = entry.Key;
this.m_Handle = handle;
this.m_ReadTimeout = this.m_WriteTimeout = -1;
}
private static unsafe _WinInetCache.Status MustRunGetAndLockFile(char *key, byte *entryPtr, ref int entryBufSize, SafeUnlockUrlCacheEntryFile handle)
{
_WinInetCache.Status success = _WinInetCache.Status.Success;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
}
finally
{
if (!UnsafeNclNativeMethods.SafeNetHandles.RetrieveUrlCacheEntryFileW(key, entryPtr, ref entryBufSize, 0))
{
success = (_WinInetCache.Status)Marshal.GetLastWin32Error();
handle.SetHandleAsInvalid();
}
else
{
handle.SetHandle((IntPtr)1);
}
}
return(success);
}
internal ReadStream(_WinInetCache.Entry entry, SafeUnlockUrlCacheEntryFile handle, bool async)
: base(entry.Filename, FileMode.Open, FileAccess.Read, FileShare.Read | FileShare.Delete, 4096, async)
{
m_Key = entry.Key;
m_Handle = handle;
m_ReadTimeout = m_WriteTimeout = System.Threading.Timeout.Infinite;
}
