| From: | Masahiro Ikeda <ikedamsh(at)oss(dot)nttdata(dot)com> |
|---|---|
| To: | Michael Paquier <michael(at)paquier(dot)xyz> |
| Cc: | Tristan Partin <tristan(at)neon(dot)tech>, andres(at)anarazel(dot)de, pgsql-hackers(at)lists(dot)postgresql(dot)org |
| Subject: | Re: Support to define custom wait events for extensions |
| Date: | 2023-07-27 09:29:22 |
| Message-ID: | cd09c86daa9e4c1c5f7903da39b75994@oss.nttdata.com |
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| Thread: | |
| Lists: | pgsql-hackers |
Hi, all.
Sorry for late reply.
> I am still mid-way through the review of the core APIs, but attached
> is my current version in progress, labelled v8. I'll continue
> tomorrow. I'm aware of some typos in the commit message of this
> patch, and the dynamic bgworker launch is failing in the CI for
> VS2019 (just too tired to finish debugging that today).
I suspect that I forgot to specify "volatile" to the variable
for the spinlock.
+/* dynamic allocation counter for custom wait events for extensions */
+typedef struct WaitEventExtensionCounter
+{
+ int nextId; /* next ID to assign */
+ slock_t mutex; /* protects the counter only */
+} WaitEventExtensionCounter;
+
+/* pointer to the shared memory */
+static WaitEventExtensionCounter * waitEventExtensionCounter;
Regards,
--
Masahiro Ikeda
NTT DATA CORPORATION
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