diff options
| author | Damien George <damien.p.george@gmail.com> | 2015-01-07 23:38:50 +0000 |
|---|---|---|
| committer | Damien George <damien.p.george@gmail.com> | 2015-01-07 23:38:50 +0000 |
| commit | 3b51b3e90f1d513031ad2c6b6a2a0d5d391f753d (patch) | |
| tree | 6903d1a13bdc49860c325e531e81582beb6063bf /stmhal/pendsv.c | |
| parent | 7a0636e80aea2ce1af03c890e024dabcdffcdf78 (diff) | |
| download | micropython-3b51b3e90f1d513031ad2c6b6a2a0d5d391f753d.tar.gz micropython-3b51b3e90f1d513031ad2c6b6a2a0d5d391f753d.zip | |
stmhal: Collect all root pointers together in 1 place.
A GC in stmhal port now only scans true root pointers, not entire BSS.
This reduces base GC time from 1700ms to 900ms.
Diffstat (limited to 'stmhal/pendsv.c')
| -rw-r--r-- | stmhal/pendsv.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/stmhal/pendsv.c b/stmhal/pendsv.c index d7104d8518..68455b2752 100644 --- a/stmhal/pendsv.c +++ b/stmhal/pendsv.c @@ -31,7 +31,10 @@ #include "py/runtime.h" #include "pendsv.h" -static void *pendsv_object = NULL; +// Note: this can contain point to the heap but is not traced by GC. +// This is okay because we only ever set it to mp_const_vcp_interrupt +// which is in the root-pointer set. +STATIC void *pendsv_object; void pendsv_init(void) { // set PendSV interrupt at lowest priority |