suspect-devices/circuitpython/unix, branch v1.8.2 CircuitPython - a Python implementation for teaching coding with microcontrollers https://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=v1.8.2 2016-07-09T15:48:06+00:00 unix: Disable the GIL to improve performance of non-thread code. 2016-07-09T15:48:06+00:00 Damien George damien.p.george@gmail.com 2016-07-09T15:48:06+00:00 urn:sha1:3096928d5ab6544c3f85639e1b97ac2cefcc2a74 Threading support is still very new so stay conservative at this point and enable threading without the GIL. This requires users to protect concurrent access of mutatable Python objects (eg lists) with locks at the Python level (something you should probably do anyway). The advantage is that there is less of a performance hit for non-threaded code, because the VM does not need to constantly release/acquire the GIL. In the future the GIL will be made more efficient. There is also room to improve the efficiency of non-GIL code by not using mutex's if there is only one thread active. unix/main: When preparing sys.path, allocate exact strings on uPy heap. 2016-07-08T22:48:07+00:00 Paul Sokolovsky pfalcon@users.sourceforge.net 2016-07-08T22:48:07+00:00 urn:sha1:520f35632d78e1b73f647d993205aade0de8b1ce Due to the way modern compilers work (allocating space for stack vars once at tha start of function, and deallocating once on exit from), using intermediate stack buffer of big size caused blockage of 4K (PATH_MAX) on stack for the entire duration of MicroPython execution. unix/main: Improve help for -X options a bit. 2016-07-08T17:53:08+00:00 Paul Sokolovsky pfalcon@users.sourceforge.net 2016-07-08T17:53:08+00:00 urn:sha1:649b69a1dbc91c7df8809c4a20c6287b23ac7f52 unix/main: Error out on unknown value of suffix in -X heapsize= option. 2016-07-08T17:49:41+00:00 Paul Sokolovsky pfalcon@users.sourceforge.net 2016-07-08T17:45:15+00:00 urn:sha1:0e5e14fe7cd97fa83e822c1e105cf498dbb4d276 E.g. -X heapsize=16Kfoo, -X heapsize=1G will lead to error. unix/mpconfigport_minimal.h: Allow to print a string within 1KB of heap. 2016-07-02T21:12:46+00:00 Paul Sokolovsky pfalcon@users.sourceforge.net 2016-07-02T21:12:46+00:00 urn:sha1:d83177b24867c42fb850714e328c7f1636067908 By adjusting parser allocation policy. unix/Makefile: Make "minimal" build be minimal again. 2016-07-02T21:10:58+00:00 Paul Sokolovsky pfalcon@users.sourceforge.net 2016-07-02T21:10:58+00:00 urn:sha1:e965d2b82af1d233703490ebf2c8432a14ef5c99 unix: Enable btree module. 2016-07-02T12:26:07+00:00 Paul Sokolovsky pfalcon@users.sourceforge.net 2016-07-02T12:26:07+00:00 urn:sha1:43241ceaacce2de370a7dd676ac9cc7383e08c83 But disable it for coverage build, as its extra warninsg aren't compatible with K&R C BerkeleyDB uses. py/modthread: Allow to properly set the stack limit of a thread. 2016-06-28T10:28:51+00:00 Damien George damien.p.george@gmail.com 2016-05-30T15:56:51+00:00 urn:sha1:df95f52583e0f5e3f2a74f7461bb00e2f24b3079 We rely on the port setting and adjusting the stack size so there is enough room to recover from hitting the stack limit. unix/modtime: Release the GIL when sleeping. 2016-06-28T10:28:50+00:00 Damien George damien.p.george@gmail.com 2016-05-26T11:54:29+00:00 urn:sha1:94d2919b7798e121e9266a6b2970e16b36339b2c unix/mpthreadport: Suppress compiler warning about unused arguments. 2016-06-28T10:28:50+00:00 Damien George damien.p.george@gmail.com 2016-05-05T11:00:37+00:00 urn:sha1:f443504f8623469d44fcf0e69fe79a856286b045