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Fix #892 - Remove racy ref counts for channels

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Rather than manual reference counting for suspended fibers, we
automate the process by incrementing "extra_listeners" every time
we suspend a fiber in the event loop, and decrement when that fiber
is resumed. In this manner, we keep track of the number of suspending
fibers in a simpler, more correct way.
This commit is contained in:
Calvin Rose
2021-12-09 18:44:55 -06:00
parent 6d9286a202
commit d543f8857b
2 changed files with 11 additions and 11 deletions
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4
src/core/fiber.h
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@@ -48,7 +48,6 @@
#define JANET_FIBER_STATUS_MASK 0x3F0000
#define JANET_FIBER_RESUME_SIGNAL 0x400000
#define JANET_FIBER_FLAG_CANCELED 0x400000
#define JANET_FIBER_STATUS_OFFSET 16
#define JANET_FIBER_BREAKPOINT 0x1000000
@@ -57,6 +56,9 @@
#define JANET_FIBER_DID_LONGJUMP 0x8000000
#define JANET_FIBER_FLAG_MASK 0xF000000
#define JANET_FIBER_EV_FLAG_CANCELED 0x10000
#define JANET_FIBER_EV_FLAG_SUSPENDED 0x20000
#define janet_fiber_set_status(f, s) do {\
(f)->flags &= ~JANET_FIBER_STATUS_MASK;\
(f)->flags |= (s) << JANET_FIBER_STATUS_OFFSET;\