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py/modmicropython: Add heap_locked function to test state of heap.

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This commit adds micropython.heap_locked() which returns the current
lock-depth of the heap, and can be used by Python code to check if the heap
is locked or not.  This new function is configured via
MICROPY_PY_MICROPYTHON_HEAP_LOCKED and is disabled by default.

This commit also changes the return value of micropython.heap_unlock() so
it returns the current lock-depth as well.
This commit is contained in:
Andrew Leech
2019-06-28 16:35:51 +10:00
committed by Damien George
parent 7eea0d8b6c
commit 86bfabec11
8 changed files with 51 additions and 1 deletions
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py/mpconfig.h
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@@ -1069,6 +1069,11 @@ typedef double mp_float_t;
#define MICROPY_PY_MICROPYTHON_STACK_USE (MICROPY_PY_MICROPYTHON_MEM_INFO)
#endif
// Whether to provide the "micropython.heap_locked" function
#ifndef MICROPY_PY_MICROPYTHON_HEAP_LOCKED
#define MICROPY_PY_MICROPYTHON_HEAP_LOCKED (0)
#endif
// Whether to provide "array" module. Note that large chunk of the
// underlying code is shared with "bytearray" builtin type, so to
// get real savings, it should be disabled too.