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apply the vecenv fix from my 1.0 branch #236

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Merged
jsuarez5341 merged 1 commit into from
May 23, 2025
Merged

apply the vecenv fix from my 1.0 branch #236

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14 changes: 14 additions & 0 deletions pufferlib/vector.py
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Original file line number Diff line number Diff line change
Expand Up @@ -350,6 +350,9 @@ def __init__(self, env_creators, env_args, env_kwargs,
self.zero_copy = zero_copy
self.sync_traj = sync_traj

self.ready_workers = []
self.waiting_workers = []

def recv(self):
recv_precheck(self)
while True:
Expand Down Expand Up @@ -450,6 +453,17 @@ def send(self, actions):
self.buf['semaphores'][idxs] = STEP

def async_reset(self, seed=0):
# Flush any waiting workers
while self.waiting_workers:
worker = self.waiting_workers.pop(0)
sem = self.buf['semaphores'][worker]
if sem >= MAIN:
self.ready_workers.append(worker)
if sem == INFO:
self.recv_pipes[worker].recv()
else:
self.waiting_workers.append(worker)

self.flag = RECV
self.prev_env_id = []
self.flag = RECV
Expand Down
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