Rework iio_context_get_xml() #1133
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tfcollins
reviewed
Jan 25, 2024
| @@ -300,6 +301,7 @@ class ChannelType(Enum): | |||
| _iiolib = "iio" | |||
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| _lib = _cdll("libiio.so.1", use_errno=True, use_last_error=True) | |||
| _libc = _cdll(find_library("c")) | |||
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This will fail in Windows. Need to use something like ctypes.util.find_msvcrt
Probably need to fix the _cdll call above as well since that breaks Windows too.
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If Python bindings were broken on Windows before, and they are still broken on Windows after, then I'd argue it's not a problem of this commit and it can be fixed later in a subsequent PR. I'm kind of running against time here :)
Instead of returning a string allocated alongside the IIO context, it will now return a string allocated on the heap, that has to be freed with free() afterwards. The function can now also return errors. The advantage of this change is multiple: - IIO contexts now don't have a huge XML string allocated during their whole lifetime; - If the application does not call iio_context_get_xml(), then all the internal functions used to generate the XML string in the first place are dead code, and when building statically, can be garbage-collected. Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Emulate the v0.x behaviour of iio_context_get_xml() by allocating the XML string when the Libiio context is created; which means that the compatibility layer's iio_context_get_xml() is still a "pure" function. Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Now that iio_context_get_xml() returns a heap-allocated string, we need to de-allocate it with free() after use. Signed-off-by: Paul Cercueil <paul@crapouillou.net>
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mhennerich
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Jan 30, 2024
tfcollins
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Jan 30, 2024
Now that iio_context_get_xml() returns a heap-allocated string, we need to de-allocate it with free() after use. Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Now that iio_context_get_xml() returns a heap-allocated string, we need to de-allocate it with free() after use. Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Now that iio_context_get_xml() returns a heap-allocated string, we need to de-allocate it with free() after use. Signed-off-by: Paul Cercueil <paul@crapouillou.net>
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Instead of returning a string allocated alongside the IIO context, it
will now return a string allocated on the heap, that has to be freed
with free() afterwards. The function can now also return errors.
The advantage of this change is multiple:
whole lifetime;
internal functions used to generate the XML string in the first place
are dead code, and when building statically, can be garbage-collected.
C# bindings will be updated by @AlexandraTrifan in #1122.