From b022ea32a685e4163595b5a3ded0bc00bb378896 Mon Sep 17 00:00:00 2001
From: Nick Mathewson <nickm@torproject.org>
Date: Thu, 6 Apr 2017 15:51:52 -0400
Subject: [PATCH] Expand cpuworker API to allow other work types

---
 src/common/workqueue.h |  2 +-
 src/or/cpuworker.c     | 14 ++++++++++++++
 src/or/cpuworker.h     |  6 ++++++
 3 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/src/common/workqueue.h b/src/common/workqueue.h
index 5d14e7f6a7..7b483eb7ac 100644
--- a/src/common/workqueue.h
+++ b/src/common/workqueue.h
@@ -16,7 +16,7 @@ typedef struct threadpool_s threadpool_t;
 typedef struct workqueue_entry_s workqueue_entry_t;
 
 /** Possible return value from a work function: */
-typedef enum {
+typedef enum workqueue_reply_t {
   WQ_RPL_REPLY = 0, /** indicates success */
   WQ_RPL_ERROR = 1, /** indicates fatal error */
   WQ_RPL_SHUTDOWN = 2, /** indicates thread is shutting down */
diff --git a/src/or/cpuworker.c b/src/or/cpuworker.c
index 790c147d7b..f79cd067cb 100644
--- a/src/or/cpuworker.c
+++ b/src/or/cpuworker.c
@@ -479,6 +479,20 @@ queue_pending_tasks(void)
   }
 }
 
+/** DOCDOC */
+workqueue_entry_t *
+cpuworker_queue_work(workqueue_reply_t (*fn)(void *, void *),
+                     void (*reply_fn)(void *),
+                     void *arg)
+{
+  tor_assert(threadpool);
+
+  return threadpool_queue_work(threadpool,
+                               fn,
+                               reply_fn,
+                               arg);
+}
+
 /** Try to tell a cpuworker to perform the public key operations necessary to
  * respond to <b>onionskin</b> for the circuit <b>circ</b>.
  *
diff --git a/src/or/cpuworker.h b/src/or/cpuworker.h
index fd426e21f6..9bc5d962dd 100644
--- a/src/or/cpuworker.h
+++ b/src/or/cpuworker.h
@@ -14,6 +14,12 @@
 
 void cpu_init(void);
 void cpuworkers_rotate_keyinfo(void);
+struct workqueue_entry_s;
+enum workqueue_reply_t;
+struct workqueue_entry_s *cpuworker_queue_work(
+                    enum workqueue_reply_t (*fn)(void *, void *),
+                    void (*reply_fn)(void *),
+                    void *arg);
 
 struct create_cell_t;
 int assign_onionskin_to_cpuworker(or_circuit_t *circ,