asiva@google.com
d6ccf8d32a
../runtime/vm/object.cc:7149: error: unimplemented code Abort in standalone tests when run with 64bit dart. The ioctl function when used with FIONREAD was being passed a 64 bit argument which is incorrect. Documentation on ioctl: FIONREAD The FIONREAD ioctl returns the number of data bytes (in all data messages queued) in the location pointed to by the arg parameter. The ioctl returns a 32-bit quantity for both 32-bit and 64-bit application., Therefore, code that passes the address of a long variable needs to be changed to pass an int variable for 64–bit applications. Review URL: http://codereview.chromium.org//9194002 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@3250 260f80e4-7a28-3924-810f-c04153c831b5
109 lines
2.9 KiB
C++
109 lines
2.9 KiB
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
|
|
// for details. All rights reserved. Use of this source code is governed by a
|
|
// BSD-style license that can be found in the LICENSE file.
|
|
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#include <sys/ioctl.h>
|
|
|
|
#include "bin/fdutils.h"
|
|
|
|
|
|
bool FDUtils::SetNonBlocking(intptr_t fd) {
|
|
intptr_t status;
|
|
status = TEMP_FAILURE_RETRY(fcntl(fd, F_GETFL));
|
|
if (status < 0) {
|
|
perror("fcntl F_GETFL failed");
|
|
return false;
|
|
}
|
|
status = (status | O_NONBLOCK);
|
|
if (TEMP_FAILURE_RETRY(fcntl(fd, F_SETFL, status)) < 0) {
|
|
perror("fcntl F_SETFL failed");
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
|
|
bool FDUtils::IsBlocking(intptr_t fd, bool* is_blocking) {
|
|
intptr_t status;
|
|
status = TEMP_FAILURE_RETRY(fcntl(fd, F_GETFL));
|
|
if (status < 0) {
|
|
perror("fcntl F_GETFL failed");
|
|
return false;
|
|
}
|
|
*is_blocking = (status & O_NONBLOCK) == 0;
|
|
return true;
|
|
}
|
|
|
|
|
|
intptr_t FDUtils::AvailableBytes(intptr_t fd) {
|
|
int available; // ioctl for FIONREAD expects an 'int*' argument.
|
|
int result = TEMP_FAILURE_RETRY(ioctl(fd, FIONREAD, &available));
|
|
if (result < 0) {
|
|
return result;
|
|
}
|
|
#ifdef DEBUG
|
|
ASSERT(available >= 0);
|
|
#endif
|
|
return static_cast<intptr_t>(available);
|
|
}
|
|
|
|
|
|
ssize_t FDUtils::ReadFromBlocking(int fd, void* buffer, size_t count) {
|
|
#ifdef DEBUG
|
|
bool is_blocking = false;
|
|
ASSERT(FDUtils::IsBlocking(fd, &is_blocking));
|
|
ASSERT(is_blocking);
|
|
#endif
|
|
size_t remaining = count;
|
|
char* buffer_pos = reinterpret_cast<char*>(buffer);
|
|
while (remaining > 0) {
|
|
ssize_t bytes_read = TEMP_FAILURE_RETRY(read(fd, buffer_pos, remaining));
|
|
if (bytes_read == 0) {
|
|
return count - remaining;
|
|
} else if (bytes_read == -1) {
|
|
ASSERT(EAGAIN == EWOULDBLOCK);
|
|
// Error code EWOULDBLOCK should only happen for non blocking
|
|
// file descriptors.
|
|
ASSERT(errno != EWOULDBLOCK);
|
|
return -1;
|
|
} else {
|
|
ASSERT((bytes_read > 0));
|
|
remaining -= bytes_read;
|
|
buffer_pos += bytes_read;
|
|
}
|
|
}
|
|
return count;
|
|
}
|
|
|
|
|
|
ssize_t FDUtils::WriteToBlocking(int fd, const void* buffer, size_t count) {
|
|
#ifdef DEBUG
|
|
bool is_blocking = false;
|
|
ASSERT(FDUtils::IsBlocking(fd, &is_blocking));
|
|
ASSERT(is_blocking);
|
|
#endif
|
|
size_t remaining = count;
|
|
char* buffer_pos = const_cast<char*>(reinterpret_cast<const char*>(buffer));
|
|
while (remaining > 0) {
|
|
ssize_t bytes_written =
|
|
TEMP_FAILURE_RETRY(write(fd, buffer_pos, remaining));
|
|
if (bytes_written == 0) {
|
|
return count - remaining;
|
|
} else if (bytes_written == -1) {
|
|
ASSERT(EAGAIN == EWOULDBLOCK);
|
|
// Error code EWOULDBLOCK should only happen for non blocking
|
|
// file descriptors.
|
|
ASSERT(errno != EWOULDBLOCK);
|
|
return -1;
|
|
} else {
|
|
ASSERT(bytes_written > 0);
|
|
remaining -= bytes_written;
|
|
buffer_pos += bytes_written;
|
|
}
|
|
}
|
|
return count;
|
|
}
|