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Author SHA1 Message Date
Damien George
5b8e884573 cc3200: Remove .boot section attribute from osi_TaskCreate function. 
This function is no longer used.  Having the .boot section attribute
meant that it was included in the firmware regargless of use.  Without
this attribute the linker can remove the function.
 2016-06-28 11:28:53 +01:00
Damien George
1d5aa9d245 cc3200: In FreeRTOSConfig.h, comment on configSUPPORT_STATIC_ALLOCATION. 
This config variable is now needed regardless of whether threading is
enabled or not.
 2016-06-28 11:28:53 +01:00
Damien George
8b9ddf4031 tests/thread: Allow some tests to run on ports with not much heap. 2016-06-28 11:28:52 +01:00
Damien George
63d05228a3 tests/thread: Allow thread_sleep1 to run without floating point. 2016-06-28 11:28:52 +01:00
Damien George
53562213c8 cc3200: Enable the GIL. 2016-06-28 11:28:52 +01:00
Damien George
fa2ac93c3a cc3200/mpthreadport: Move mem alloc outside the thread_mutex lock. 
Otherwise there could be a deadlock, with the GC's mutex and
thread_mutex.
 2016-06-28 11:28:52 +01:00
Damien George
757146efe3 cc3200/mpthreadport: Scan more root pointers from thread data. 2016-06-28 11:28:52 +01:00
Damien George
17886828c8 cc3200/gccollect: Use MP_STATE_THREAD(stack_top) to get top of stack. 2016-06-28 11:28:52 +01:00
Damien George
3b0fbfe4e5 cc3200/mpthreadport: Properly initialise the main thread's data. 2016-06-28 11:28:52 +01:00
Damien George
27241293c4 cc3200/mpthreadport: Make mutex statically allocated. 
Reduced the need for the FreeRTOS heap to allocate the mutex.
 2016-06-28 11:28:52 +01:00
Damien George
0455755296 cc3200: Use xTaskCreateStatic instead of osi_TaskCreate. 
This allows to statically allocate the TCB (thread control block) and
thread stack in the BSS segment, reducing the need for dynamic memory
allocation.
 2016-06-28 11:28:52 +01:00
Damien George
77e37ff98b py/mpthread: Include mpstate.h when defining GIL macros. 2016-06-28 11:28:52 +01:00
Damien George
15e68277c1 tests/thread: Make sure that thread tests don't rely on floating point. 2016-06-28 11:28:52 +01:00
Damien George
5b7789d519 tests/thread: Make stack-size test run correctly and reliable on uPy. 2016-06-28 11:28:52 +01:00
Damien George
94238d4ae5 py/nlrsetjmp: Update to take into account new location of nlr_top. 
It's now accessed via the MP_STATE_THREAD macro.
 2016-06-28 11:28:52 +01:00
Damien George
1df4168c33 py/nlrthumb: Convert NLR thumb funcs from asm to C with inline-asm. 
Now only the bits that really need to be written in assembler are written
in it, otherwise C is used.  This means that the assembler code no longer
needs to know about the global state structure which makes it much easier
to maintain.
 2016-06-28 11:28:52 +01:00
Damien George
c9520c591b cc3200: Fix call to new exception to be _msg instead of _arg1. 2016-06-28 11:28:51 +01:00
Damien George
df95f52583 py/modthread: Allow to properly set the stack limit of a thread. 
We rely on the port setting and adjusting the stack size so there is
enough room to recover from hitting the stack limit.
 2016-06-28 11:28:51 +01:00
Damien George
eef4f13a33 cc3200: Add basic threading capabilities. 
Can create a new thread and run it.  Does not use the GIL at this point.
 2016-06-28 11:28:51 +01:00
Damien George
9b1c1262dc cc3200: Define our own FreeRTOS heap so it can go in a special segment. 2016-06-28 11:28:50 +01:00
Damien George
5c0fc73f33 cc3200: Update FreeRTOS to v9.0.0. 
This is a pristine copy (actually a subset of files) of upstream FreeRTOS
v9.0.0.

Modifications to the previous version of FreeRTOS (v8.1.2) included
addition of __attribute__ ((section (".boot"))) to the following
functions:

    pxPortInitialiseStack
    prvTaskExitError
    prvPortStartFirstTask
    xPortStartScheduler
    vPortSetupTimerInterrupt
    xTaskGenericCreate
    vTaskStartScheduler
    prvInitialiseTCBVariables
    prvInitialiseTaskLists
    prvAllocateTCBAndStack

This attribute will need to be reinstated on a case-by-case basis
because some of the above functions are now removed/changed.
 2016-06-28 11:28:50 +01:00
Damien George
e90b6ce0b5 py/mpthread.h: Move GIL macros outside MICROPY_PY_THREAD block. 
The GIL macros are needed even if threading is not enabled.
 2016-06-28 11:28:50 +01:00
Damien George
94d2919b77 unix/modtime: Release the GIL when sleeping. 2016-06-28 11:28:50 +01:00
Damien George
c567afc5fa py/modthread: Make Lock objects work when GIL is enabled. 2016-06-28 11:28:50 +01:00
Damien George
a1c93a62b1 py: Don't use gc or qstr mutex when the GIL is enabled. 
There is no need since the GIL already makes gc and qstr operations
atomic.
 2016-06-28 11:28:50 +01:00
Damien George
4cec63a9db py: Implement a simple global interpreter lock. 
This makes the VM/runtime thread safe, at the cost of not being able to
run code in parallel.
 2016-06-28 11:28:50 +01:00
Damien George
1f54ad2aed py: Make interning of qstrs thread safe. 2016-06-28 11:28:50 +01:00
Damien George
b7274e91bc tests/thread: Add test for concurrent mutating of user instance. 2016-06-28 11:28:50 +01:00
Damien George
2e4cdae4fd tests/thread: Add test for concurrent interning of strings. 
Qstr code accesses global state and needs to be made thread safe.
 2016-06-28 11:28:50 +01:00
Damien George
094a0dd11a tests/thread: Add tests that mutate shared objects. 
Tests concurrent mutating access to: list, dict, set, bytearray.
 2016-06-28 11:28:50 +01:00
Damien George
c73cf9d931 tests/thread: Rename thread_stress_XXX.py to stress_XXX.py. 2016-06-28 11:28:50 +01:00
Damien George
f443504f86 unix/mpthreadport: Suppress compiler warning about unused arguments. 2016-06-28 11:28:50 +01:00
Damien George
f1dbd2909e unix/gccollect: Provide declaration of exported function. 2016-06-28 11:28:50 +01:00
Damien George
c2508ac8bd unix/mpthreadport: Use SA_SIGINFO for GC signal handler. 
SA_SIGINFO allows the signal handler to access more information about
the signal, especially useful in a threaded environment.  The extra
information is not currently used but it may prove useful in the future.
 2016-06-28 11:28:49 +01:00
Damien George
3653f5144a py/gc: Fix GC+thread bug where ptr gets lost because it's not computed. 
GC_EXIT() can cause a pending thread (waiting on the mutex) to be
scheduled right away.  This other thread may trigger a garbage
collection.  If the pointer to the newly-allocated block (allocated by
the original thread) is not computed before the switch (so it's just left
as a block number) then the block will be wrongly reclaimed.

This patch makes sure the pointer is computed before allowing any thread
switch to occur.
 2016-06-28 11:28:49 +01:00
Damien George
dbd54e0b5b unix: Implement garbage collection with threading. 
This patch allows any given thread to do a proper garbage collection and
scan all the pointers of all active threads.
 2016-06-28 11:28:49 +01:00
Damien George
9172c0cb25 py/modthread: Call mp_thread_start/mp_thread_finish around threads. 
So the underlying thread implementation can do any necessary bookkeeping.
 2016-06-28 11:28:49 +01:00
Damien George
722cff5fd0 py/modthread: Be more careful with root pointers when creating a thread. 2016-06-28 11:28:49 +01:00
Damien George
f1b6db2218 unix/file: If write syscall returns because of EINTR then try again. 
As per PEP-475.
 2016-06-28 11:28:49 +01:00
Damien George
e33806aaff py/gc: Fix 2 cases of concurrent access to ATB and FTB. 2016-06-28 11:28:49 +01:00
Damien George
7f4658a7ee py/modthread: Satisfy unused-args warning. 2016-06-28 11:28:49 +01:00
Damien George
dcc7c5bd89 tests/thread: Add tests for running GC within a thread, and heap stress. 2016-06-28 11:28:49 +01:00
Damien George
c93d9caa8b py/gc: Make memory manager and garbage collector thread safe. 
By using a single, global mutex, all memory-related functions (alloc,
free, realloc, collect, etc) are made thread safe.  This means that only
one thread can be in such a function at any one time.
 2016-06-28 11:28:49 +01:00
Damien George
34fc006f5e py/modthread: Add with-context capabilities to lock object. 2016-06-28 11:28:49 +01:00
Damien George
801d1b3803 py/modthread: Implement lock object, for creating a mutex. 2016-06-28 11:28:49 +01:00
Damien George
2dacd604c5 py/modthread: Add exit() function. 
Simply raises the SystemExit exception.
 2016-06-28 11:28:48 +01:00
Damien George
707f98f207 py/modthread: Add stack_size() function. 2016-06-28 11:28:48 +01:00
Damien George
3eb7a26809 py/modthread: Properly cast concrete exception pointer to an object. 2016-06-28 11:28:48 +01:00
Damien George
a791be936a unix: Add basic thread support using pthreads. 
Has the ability to create new threads.
 2016-06-28 11:28:48 +01:00
Damien George
27cc07721b py: Add basic _thread module, with ability to start a new thread. 2016-06-28 11:28:48 +01:00