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1. Add macro check in rtdebug.h;
2. Use RT_USING_POSIX for poll/select, stdin etc.
3. Split dfs_posix.h to dfs_posix.h, dfs_poll.h and dfs_select.h;
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method/functions.
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1. Change 'rt_uint8_t' type of cmd to 'int';
2. Add waitqueue;
3. Split device ipc header files;
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@grissiom suggestion.
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empty
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isn't reset.
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Remove dataqueue/pipe if not enable RT_USING_HEAP, supply the missing `not`.
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fix: completion wait after, maybe can't clean the flag.
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OXape reports: http://www.rt-thread.org/phpBB3/topic3939.html
driver/ringbuffer: when data length is bigger than space length
for rb, the read_index in rb is not update.
When length > space, update the read_index, the bug can be fix, and
works fine.
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When forwarding rx/tx callback from the underlaying device(pipe), the
"dev" argument should be the portal. So the portal callback could think
itself as called.
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It does not make sense to open portal without a flag. One should open a
portal with RT_DEVICE_OFLAG_RDWR in most cases.
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Portal is a device that connect devices. Currently, you can only connect
pipes in portal. Pipes are unidirectional. But with portal, you can
construct a bidirectional device with two pipes.
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Pipe have many differences with char device. The main difference is
altough pipe have both read and write, it is unidirectional in nature.
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Some reader(FinSh again) would like to block on a semaphore which is
released in rx_indicate. So we should invoke rx_indicate in
_rt_pipe_resume_reader.
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The previous implementation will always blocks the reader/writer.
However, at least FinSh would expect the device to be nonblocking ---
read should return 0 when there is no data in it.
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Add the APIs that will discard the old data when rb is full.
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RT_RINGBUFFER_SIZE could mean "the size of the whole buffer", "the size
of the empty space" or "the size of the data". Moreover, it's never a
micro anymore. Change it to rt_ringbuffer_data_len before it's too late.
Also, RT_RINGBUFFER_EMPTY is changed to rt_ringbuffer_space_len.
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This provide the possibility that allocate the buffer of the ringbuffer
on a specific region, instead of always mallocing it. It also bring us
the benefit of using pipe device on the systems without heap.
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The new implementation use the mirroring method to distinguish full
buffer and the empty buffer. It also support buffers of arbitrary size.
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git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2529 bbd45198-f89e-11dd-88c7-29a3b14d5316
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git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2431 bbd45198-f89e-11dd-88c7-29a3b14d5316
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git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2384 bbd45198-f89e-11dd-88c7-29a3b14d5316
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git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2382 bbd45198-f89e-11dd-88c7-29a3b14d5316
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git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2344 bbd45198-f89e-11dd-88c7-29a3b14d5316
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git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2314 bbd45198-f89e-11dd-88c7-29a3b14d5316
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the available data of ring buffer.
git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2313 bbd45198-f89e-11dd-88c7-29a3b14d5316
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git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2199 bbd45198-f89e-11dd-88c7-29a3b14d5316
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git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2107 bbd45198-f89e-11dd-88c7-29a3b14d5316
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git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2098 bbd45198-f89e-11dd-88c7-29a3b14d5316
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