[Tarantool-patches] [PATCH 06/16] cord_buf: introduce ownership management

[Vladislav Shpilevoy]

Hi! Thanks for the review!

>> diff --git a/src/lib/core/cord_buf.c b/src/lib/core/cord_buf.c
>> index cac508c3d..9450d75bc 100644
>> --- a/src/lib/core/cord_buf.c
>> +++ b/src/lib/core/cord_buf.c
>> @@ -5,6 +5,7 @@
>>    */
>>   #include "cord_buf.h"
>>   #include "fiber.h"
>> +#include "trigger.h"
>>     #include "small/ibuf.h"
>>   @@ -13,35 +14,154 @@ enum {
>>       CORD_IBUF_START_CAPACITY = 16384,
>>   };
>>   -static struct ibuf *cord_buf_global = NULL;
>> +/** Global buffer with automatic collection on fiber yield. */
>> +struct cord_buf {
>> +    /** Base buffer. */
>> +    struct ibuf base;
>> +    /**
>> +     * Triggers on fiber stop/yield when the buffer is either destroyed or
>> +     * cached to the global stash for later reuse.
>> +     */
>> +    struct trigger on_stop;
>> +    struct trigger on_yield;
>> +#if !NDEBUG
> 
> Shouldn't it be `#if !defined(NDEBUG)`? I'm not sure, just asking.

Yes, totally forgot about it.

====================
diff --git a/src/lib/core/cord_buf.c b/src/lib/core/cord_buf.c
index 9450d75bc..1d0fb3a41 100644
--- a/src/lib/core/cord_buf.c
+++ b/src/lib/core/cord_buf.c
@@ -24,7 +24,7 @@ struct cord_buf {
 	 */
 	struct trigger on_stop;
 	struct trigger on_yield;
-#if !NDEBUG
+#ifndef NDEBUG
 	/**
 	 * Fiber owning the buffer right now. Used for debug and sanity checks
 	 * only.
@@ -52,7 +52,7 @@ cord_buf_set_owner(struct cord_buf *buf)
 	struct fiber *f = fiber();
 	trigger_add(&f->on_stop, &buf->on_stop);
 	trigger_add(&f->on_yield, &buf->on_yield);
-#if !NDEBUG
+#ifndef NDEBUG
 	buf->owner = f;
 #endif
 	ibuf_reset(&buf->base);
@@ -64,7 +64,7 @@ cord_buf_clear_owner(struct cord_buf *buf)
 	assert(buf->owner == fiber());
 	trigger_clear(&buf->on_stop);
 	trigger_clear(&buf->on_yield);
-#if !NDEBUG
+#ifndef NDEBUG
 	buf->owner = NULL;
 #endif
 }
@@ -98,7 +98,7 @@ cord_buf_new(void)
 	ibuf_create(&buf->base, &cord()->slabc, CORD_IBUF_START_CAPACITY);
 	trigger_create(&buf->on_stop, cord_buf_on_stop, buf, NULL);
 	trigger_create(&buf->on_yield, cord_buf_on_yield, buf, NULL);
-#if !NDEBUG
+#ifndef NDEBUG
 	buf->owner = NULL;
 #endif
 	return buf;