int open(const char* path, int flags, boost::system::error_code& ec)
{
- errno = 0;
- int result = error_wrapper(::open(path, flags), ec);
- if (result >= 0)
- ec = boost::system::error_code();
+ int result = ::open(path, flags);
+ get_last_error(ec, result < 0);
return result;
}
int result = 0;
if (d != -1)
{
- errno = 0;
- result = error_wrapper(::close(d), ec);
+ result = ::close(d);
+ get_last_error(ec, result < 0);
if (result != 0
&& (ec == boost::asio::error::would_block
#endif // defined(__SYMBIAN32__) || defined(__EMSCRIPTEN__)
state &= ~non_blocking;
- errno = 0;
- result = error_wrapper(::close(d), ec);
+ result = ::close(d);
+ get_last_error(ec, result < 0);
}
}
- if (result == 0)
- ec = boost::system::error_code();
return result;
}
return false;
}
- errno = 0;
#if defined(__SYMBIAN32__) || defined(__EMSCRIPTEN__)
- int result = error_wrapper(::fcntl(d, F_GETFL, 0), ec);
+ int result = ::fcntl(d, F_GETFL, 0);
+ get_last_error(ec, result < 0);
if (result >= 0)
{
- errno = 0;
int flag = (value ? (result | O_NONBLOCK) : (result & ~O_NONBLOCK));
- result = error_wrapper(::fcntl(d, F_SETFL, flag), ec);
+ result = ::fcntl(d, F_SETFL, flag);
+ get_last_error(ec, result < 0);
}
#else // defined(__SYMBIAN32__) || defined(__EMSCRIPTEN__)
ioctl_arg_type arg = (value ? 1 : 0);
- int result = error_wrapper(::ioctl(d, FIONBIO, &arg), ec);
+ int result = ::ioctl(d, FIONBIO, &arg);
+ get_last_error(ec, result < 0);
#endif // defined(__SYMBIAN32__) || defined(__EMSCRIPTEN__)
if (result >= 0)
{
- ec = boost::system::error_code();
if (value)
state |= user_set_non_blocking;
else
return false;
}
- errno = 0;
#if defined(__SYMBIAN32__) || defined(__EMSCRIPTEN__)
- int result = error_wrapper(::fcntl(d, F_GETFL, 0), ec);
+ int result = ::fcntl(d, F_GETFL, 0);
+ get_last_error(ec, result < 0);
if (result >= 0)
{
- errno = 0;
int flag = (value ? (result | O_NONBLOCK) : (result & ~O_NONBLOCK));
- result = error_wrapper(::fcntl(d, F_SETFL, flag), ec);
+ result = ::fcntl(d, F_SETFL, flag);
+ get_last_error(ec, result < 0);
}
#else // defined(__SYMBIAN32__) || defined(__EMSCRIPTEN__)
ioctl_arg_type arg = (value ? 1 : 0);
- int result = error_wrapper(::ioctl(d, FIONBIO, &arg), ec);
+ int result = ::ioctl(d, FIONBIO, &arg);
+ get_last_error(ec, result < 0);
#endif // defined(__SYMBIAN32__) || defined(__EMSCRIPTEN__)
if (result >= 0)
{
- ec = boost::system::error_code();
if (value)
state |= internal_non_blocking;
else
// A request to read 0 bytes on a stream is a no-op.
if (all_empty)
{
- ec = boost::system::error_code();
+ ec.assign(0, ec.category());
return 0;
}
for (;;)
{
// Try to complete the operation without blocking.
- errno = 0;
- signed_size_type bytes = error_wrapper(::readv(
- d, bufs, static_cast<int>(count)), ec);
+ signed_size_type bytes = ::readv(d, bufs, static_cast<int>(count));
+ get_last_error(ec, bytes < 0);
+
+ // Check if operation succeeded.
+ if (bytes > 0)
+ return bytes;
+
+ // Check for EOF.
+ if (bytes == 0)
+ {
+ ec = boost::asio::error::eof;
+ return 0;
+ }
+
+ // Operation failed.
+ if ((state & user_set_non_blocking)
+ || (ec != boost::asio::error::would_block
+ && ec != boost::asio::error::try_again))
+ return 0;
+
+ // Wait for descriptor to become ready.
+ if (descriptor_ops::poll_read(d, 0, ec) < 0)
+ return 0;
+ }
+}
+
+std::size_t sync_read1(int d, state_type state, void* data,
+ std::size_t size, boost::system::error_code& ec)
+{
+ if (d == -1)
+ {
+ ec = boost::asio::error::bad_descriptor;
+ return 0;
+ }
+
+ // A request to read 0 bytes on a stream is a no-op.
+ if (size == 0)
+ {
+ ec.assign(0, ec.category());
+ return 0;
+ }
+
+ // Read some data.
+ for (;;)
+ {
+ // Try to complete the operation without blocking.
+ signed_size_type bytes = ::read(d, data, size);
+ get_last_error(ec, bytes < 0);
// Check if operation succeeded.
if (bytes > 0)
for (;;)
{
// Read some data.
- errno = 0;
- signed_size_type bytes = error_wrapper(::readv(
- d, bufs, static_cast<int>(count)), ec);
+ signed_size_type bytes = ::readv(d, bufs, static_cast<int>(count));
+ get_last_error(ec, bytes < 0);
// Check for end of stream.
if (bytes == 0)
return true;
}
+ // Check if operation succeeded.
+ if (bytes > 0)
+ {
+ bytes_transferred = bytes;
+ return true;
+ }
+
// Retry operation if interrupted by signal.
if (ec == boost::asio::error::interrupted)
continue;
|| ec == boost::asio::error::try_again)
return false;
- // Operation is complete.
+ // Operation failed.
+ bytes_transferred = 0;
+ return true;
+ }
+}
+
+bool non_blocking_read1(int d, void* data, std::size_t size,
+ boost::system::error_code& ec, std::size_t& bytes_transferred)
+{
+ for (;;)
+ {
+ // Read some data.
+ signed_size_type bytes = ::read(d, data, size);
+ get_last_error(ec, bytes < 0);
+
+ // Check for end of stream.
+ if (bytes == 0)
+ {
+ ec = boost::asio::error::eof;
+ return true;
+ }
+
+ // Check if operation succeeded.
if (bytes > 0)
{
- ec = boost::system::error_code();
bytes_transferred = bytes;
+ return true;
}
- else
- bytes_transferred = 0;
+ // Retry operation if interrupted by signal.
+ if (ec == boost::asio::error::interrupted)
+ continue;
+
+ // Check if we need to run the operation again.
+ if (ec == boost::asio::error::would_block
+ || ec == boost::asio::error::try_again)
+ return false;
+
+ // Operation failed.
+ bytes_transferred = 0;
return true;
}
}
// A request to write 0 bytes on a stream is a no-op.
if (all_empty)
{
- ec = boost::system::error_code();
+ ec.assign(0, ec.category());
+ return 0;
+ }
+
+ // Write some data.
+ for (;;)
+ {
+ // Try to complete the operation without blocking.
+ signed_size_type bytes = ::writev(d, bufs, static_cast<int>(count));
+ get_last_error(ec, bytes < 0);
+
+ // Check if operation succeeded.
+ if (bytes > 0)
+ return bytes;
+
+ // Operation failed.
+ if ((state & user_set_non_blocking)
+ || (ec != boost::asio::error::would_block
+ && ec != boost::asio::error::try_again))
+ return 0;
+
+ // Wait for descriptor to become ready.
+ if (descriptor_ops::poll_write(d, 0, ec) < 0)
+ return 0;
+ }
+}
+
+std::size_t sync_write1(int d, state_type state, const void* data,
+ std::size_t size, boost::system::error_code& ec)
+{
+ if (d == -1)
+ {
+ ec = boost::asio::error::bad_descriptor;
+ return 0;
+ }
+
+ // A request to write 0 bytes on a stream is a no-op.
+ if (size == 0)
+ {
+ ec.assign(0, ec.category());
return 0;
}
for (;;)
{
// Try to complete the operation without blocking.
- errno = 0;
- signed_size_type bytes = error_wrapper(::writev(
- d, bufs, static_cast<int>(count)), ec);
+ signed_size_type bytes = ::write(d, data, size);
+ get_last_error(ec, bytes < 0);
// Check if operation succeeded.
if (bytes > 0)
for (;;)
{
// Write some data.
- errno = 0;
- signed_size_type bytes = error_wrapper(::writev(
- d, bufs, static_cast<int>(count)), ec);
+ signed_size_type bytes = ::writev(d, bufs, static_cast<int>(count));
+ get_last_error(ec, bytes < 0);
+
+ // Check if operation succeeded.
+ if (bytes >= 0)
+ {
+ bytes_transferred = bytes;
+ return true;
+ }
// Retry operation if interrupted by signal.
if (ec == boost::asio::error::interrupted)
|| ec == boost::asio::error::try_again)
return false;
- // Operation is complete.
+ // Operation failed.
+ bytes_transferred = 0;
+ return true;
+ }
+}
+
+bool non_blocking_write1(int d, const void* data, std::size_t size,
+ boost::system::error_code& ec, std::size_t& bytes_transferred)
+{
+ for (;;)
+ {
+ // Write some data.
+ signed_size_type bytes = ::write(d, data, size);
+ get_last_error(ec, bytes < 0);
+
+ // Check if operation succeeded.
if (bytes >= 0)
{
- ec = boost::system::error_code();
bytes_transferred = bytes;
+ return true;
}
- else
- bytes_transferred = 0;
+ // Retry operation if interrupted by signal.
+ if (ec == boost::asio::error::interrupted)
+ continue;
+
+ // Check if we need to run the operation again.
+ if (ec == boost::asio::error::would_block
+ || ec == boost::asio::error::try_again)
+ return false;
+
+ // Operation failed.
+ bytes_transferred = 0;
return true;
}
}
return -1;
}
- errno = 0;
- int result = error_wrapper(::ioctl(d, cmd, arg), ec);
+ int result = ::ioctl(d, cmd, arg);
+ get_last_error(ec, result < 0);
if (result >= 0)
{
- ec = boost::system::error_code();
-
// When updating the non-blocking mode we always perform the ioctl syscall,
// even if the flags would otherwise indicate that the descriptor is
// already in the correct state. This ensures that the underlying
return -1;
}
- errno = 0;
- int result = error_wrapper(::fcntl(d, cmd), ec);
- if (result != -1)
- ec = boost::system::error_code();
+ int result = ::fcntl(d, cmd);
+ get_last_error(ec, result < 0);
return result;
}
return -1;
}
- errno = 0;
- int result = error_wrapper(::fcntl(d, cmd, arg), ec);
- if (result != -1)
- ec = boost::system::error_code();
+ int result = ::fcntl(d, cmd, arg);
+ get_last_error(ec, result < 0);
return result;
}
fds.events = POLLIN;
fds.revents = 0;
int timeout = (state & user_set_non_blocking) ? 0 : -1;
- errno = 0;
- int result = error_wrapper(::poll(&fds, 1, timeout), ec);
+ int result = ::poll(&fds, 1, timeout);
+ get_last_error(ec, result < 0);
if (result == 0)
- ec = (state & user_set_non_blocking)
- ? boost::asio::error::would_block : boost::system::error_code();
- else if (result > 0)
- ec = boost::system::error_code();
+ if (state & user_set_non_blocking)
+ ec = boost::asio::error::would_block;
return result;
}
fds.events = POLLOUT;
fds.revents = 0;
int timeout = (state & user_set_non_blocking) ? 0 : -1;
- errno = 0;
- int result = error_wrapper(::poll(&fds, 1, timeout), ec);
+ int result = ::poll(&fds, 1, timeout);
+ get_last_error(ec, result < 0);
if (result == 0)
- ec = (state & user_set_non_blocking)
- ? boost::asio::error::would_block : boost::system::error_code();
- else if (result > 0)
- ec = boost::system::error_code();
+ if (state & user_set_non_blocking)
+ ec = boost::asio::error::would_block;
return result;
}
fds.events = POLLPRI | POLLERR | POLLHUP;
fds.revents = 0;
int timeout = (state & user_set_non_blocking) ? 0 : -1;
- errno = 0;
- int result = error_wrapper(::poll(&fds, 1, timeout), ec);
+ int result = ::poll(&fds, 1, timeout);
+ get_last_error(ec, result < 0);
if (result == 0)
- ec = (state & user_set_non_blocking)
- ? boost::asio::error::would_block : boost::system::error_code();
- else if (result > 0)
- ec = boost::system::error_code();
+ if (state & user_set_non_blocking)
+ ec = boost::asio::error::would_block;
return result;
}
projects / ceph.git / blobdiff