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-rw-r--r--Modules/_multiprocessing/pipe_connection.c149
1 files changed, 0 insertions, 149 deletions
diff --git a/Modules/_multiprocessing/pipe_connection.c b/Modules/_multiprocessing/pipe_connection.c
deleted file mode 100644
index 05dde0c..0000000
--- a/Modules/_multiprocessing/pipe_connection.c
+++ /dev/null
@@ -1,149 +0,0 @@
-/*
- * A type which wraps a pipe handle in message oriented mode
- *
- * pipe_connection.c
- *
- * Copyright (c) 2006-2008, R Oudkerk --- see COPYING.txt
- */
-
-#include "multiprocessing.h"
-
-#define CLOSE(h) CloseHandle(h)
-
-/*
- * Send string to the pipe; assumes in message oriented mode
- */
-
-static Py_ssize_t
-conn_send_string(ConnectionObject *conn, char *string, size_t length)
-{
- DWORD amount_written;
- BOOL ret;
-
- Py_BEGIN_ALLOW_THREADS
- ret = WriteFile(conn->handle, string, length, &amount_written, NULL);
- Py_END_ALLOW_THREADS
-
- if (ret == 0 && GetLastError() == ERROR_NO_SYSTEM_RESOURCES) {
- PyErr_Format(PyExc_ValueError, "Cannnot send %" PY_FORMAT_SIZE_T "d bytes over connection", length);
- return MP_STANDARD_ERROR;
- }
-
- return ret ? MP_SUCCESS : MP_STANDARD_ERROR;
-}
-
-/*
- * Attempts to read into buffer, or if buffer too small into *newbuffer.
- *
- * Returns number of bytes read. Assumes in message oriented mode.
- */
-
-static Py_ssize_t
-conn_recv_string(ConnectionObject *conn, char *buffer,
- size_t buflength, char **newbuffer, size_t maxlength)
-{
- DWORD left, length, full_length, err;
- BOOL ret;
- *newbuffer = NULL;
-
- Py_BEGIN_ALLOW_THREADS
- ret = ReadFile(conn->handle, buffer, MIN(buflength, maxlength),
- &length, NULL);
- Py_END_ALLOW_THREADS
- if (ret)
- return length;
-
- err = GetLastError();
- if (err != ERROR_MORE_DATA) {
- if (err == ERROR_BROKEN_PIPE)
- return MP_END_OF_FILE;
- return MP_STANDARD_ERROR;
- }
-
- if (!PeekNamedPipe(conn->handle, NULL, 0, NULL, NULL, &left))
- return MP_STANDARD_ERROR;
-
- full_length = length + left;
- if (full_length > maxlength)
- return MP_BAD_MESSAGE_LENGTH;
-
- *newbuffer = PyMem_Malloc(full_length);
- if (*newbuffer == NULL)
- return MP_MEMORY_ERROR;
-
- memcpy(*newbuffer, buffer, length);
-
- Py_BEGIN_ALLOW_THREADS
- ret = ReadFile(conn->handle, *newbuffer+length, left, &length, NULL);
- Py_END_ALLOW_THREADS
- if (ret) {
- assert(length == left);
- return full_length;
- } else {
- PyMem_Free(*newbuffer);
- return MP_STANDARD_ERROR;
- }
-}
-
-/*
- * Check whether any data is available for reading
- */
-
-static int
-conn_poll(ConnectionObject *conn, double timeout, PyThreadState *_save)
-{
- DWORD bytes, deadline, delay;
- int difference, res;
- BOOL block = FALSE;
-
- if (!PeekNamedPipe(conn->handle, NULL, 0, NULL, &bytes, NULL))
- return MP_STANDARD_ERROR;
-
- if (timeout == 0.0)
- return bytes > 0;
-
- if (timeout < 0.0)
- block = TRUE;
- else
- /* XXX does not check for overflow */
- deadline = GetTickCount() + (DWORD)(1000 * timeout + 0.5);
-
- Sleep(0);
-
- for (delay = 1 ; ; delay += 1) {
- if (!PeekNamedPipe(conn->handle, NULL, 0, NULL, &bytes, NULL))
- return MP_STANDARD_ERROR;
- else if (bytes > 0)
- return TRUE;
-
- if (!block) {
- difference = deadline - GetTickCount();
- if (difference < 0)
- return FALSE;
- if ((int)delay > difference)
- delay = difference;
- }
-
- if (delay > 20)
- delay = 20;
-
- Sleep(delay);
-
- /* check for signals */
- Py_BLOCK_THREADS
- res = PyErr_CheckSignals();
- Py_UNBLOCK_THREADS
-
- if (res)
- return MP_EXCEPTION_HAS_BEEN_SET;
- }
-}
-
-/*
- * "connection.h" defines the PipeConnection type using the definitions above
- */
-
-#define CONNECTION_NAME "PipeConnection"
-#define CONNECTION_TYPE PipeConnectionType
-
-#include "connection.h"