This is very similar to std::unique_ptr, but doesn't require including
the <memory> header which pulls lots of c++ headers and cause problems
with nuttx headers. It's header-only. It contains an explanation on what
it solves, how to use and unit tests.
Fix warning that reveals a real bug:
In file included from libraries/AP_HAL_Linux/UARTDriver.cpp:25:0:
libraries/AP_HAL_Linux/UARTDriver.cpp: In member function 'virtual bool Linux::UARTDriver::tx_pending()':
libraries/AP_HAL/utility/RingBuffer.h:21:35: warning: logical not is only applied to the left hand side of comparison [-Wlogical-not-parentheses]
#define BUF_EMPTY(buf) buf##_head == buf##_tail
^
libraries/AP_HAL_Linux/UARTDriver.cpp:355:13: note: in expansion of macro 'BUF_EMPTY'
return !BUF_EMPTY(_writebuf);
The problem is when there's a ! operator: without the parenthesis we would actually be doing
return !_write_buf_head == _write_buf_tail
which is not what we want.
As commented in 8218140 ("AP_Common: add scanf format macro"), "FORMAT"
was a bad name for this macro since there's also the scanf. Rename to
FMT_PRINTF to follow the scanf name.
Most of AP_Progmem is already gone so we can stop including it in most
of the places. The only places that need it are the ones using
pgm_read_*() APIs.
In some cases the header needed to be added in the .cpp since it was
removed from the .h to reduce scope. In those cases the headers were
also reordered.
prog_char and prog_char_t are now the same as char on supported
platforms. So, just change all places that use them and prefer char
instead.
AVR-specific places were not changed.
Now variables don't have to be declared with PROGMEM anymore, so remove
them. This was automated with:
git grep -l -z PROGMEM | xargs -0 sed -i 's/ PROGMEM / /g'
git grep -l -z PROGMEM | xargs -0 sed -i 's/PROGMEM//g'
The 2 commands were done so we don't leave behind spurious spaces.
AVR-specific places were not changed.
The PSTR is already define as a NOP for all supported platforms. It's
only needed for AVR so here we remove all the uses throughout the
codebase.
This was automated with a simple python script so it also converts
places which spans to multiple lines, removing the matching parentheses.
AVR-specific places were not changed.
This commit changes the way libraries headers are included in source files:
- If the header is in the same directory the source belongs to, so the
notation '#include ""' is used with the path relative to the directory
containing the source.
- If the header is outside the directory containing the source, then we use
the notation '#include <>' with the path relative to libraries folder.
Some of the advantages of such approach:
- Only one search path for libraries headers.
- OSs like Windows may have a better lookup time.
Now that we are using C++11 we can use variadic templates to simplify
the FastDelegate classes. It also simplifies moving away from the
FastDelegate implementation.
This is a Functor implementation that should cover the use cases we have
for FastDelegate. In contrary to the latter, it can be constructed at
compile time so the compiler can safely put it in a read-only section
which covers the cases in which we are not using it.
Lucas De Marchi
Andrew Tridgell
Tom Pittenger
Gustavo Jose de Sousa
Staroselskii Georgii