diff options
author | Damien George <damien.p.george@gmail.com> | 2016-05-26 10:42:53 +0000 |
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committer | Damien George <damien.p.george@gmail.com> | 2016-06-28 11:28:50 +0100 |
commit | 4cec63a9dbed86c4332b9e7fcd56d092046193e4 (patch) | |
tree | 9e5e0636411f5de6647d4021c8069a39cb031f14 /py/modthread.c | |
parent | 1f54ad2aed0dc8f2d868ccd89ccf639a475e8022 (diff) |
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.
Diffstat (limited to 'py/modthread.c')
-rw-r--r-- | py/modthread.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/py/modthread.c b/py/modthread.c index 930ca45bb..7efad78c9 100644 --- a/py/modthread.c +++ b/py/modthread.c @@ -146,6 +146,8 @@ typedef struct _thread_entry_args_t { } thread_entry_args_t; STATIC void *thread_entry(void *args_in) { + // Execution begins here for a new thread. We do not have the GIL. + thread_entry_args_t *args = (thread_entry_args_t*)args_in; mp_state_thread_t ts; @@ -154,6 +156,8 @@ STATIC void *thread_entry(void *args_in) { mp_stack_set_top(&ts + 1); // need to include ts in root-pointer scan mp_stack_set_limit(16 * 1024); // fixed stack limit for now + MP_THREAD_GIL_ENTER(); + // signal that we are set up and running mp_thread_start(); @@ -188,6 +192,8 @@ STATIC void *thread_entry(void *args_in) { // signal that we are finished mp_thread_finish(); + MP_THREAD_GIL_EXIT(); + return NULL; } |