logging: log_output: Move flushing and writing to the header

Move log_output_flush and log_output_write (renamed internal
buffer_write() function) to the header as inline functions.
Those function are used by log_output_dict.c and there are cases
when log_output.c is not compiled in.

Signed-off-by: Krzysztof Chruściński <krzysztof.chruscinski@nordicsemi.no>

include/zephyr/logging/log_output.h

@@ -190,11 +190,34 @@ void log_output_msg_syst_process(const struct log_output *log_output,
  */
 void log_output_dropped_process(const struct log_output *output, uint32_t cnt);
 
+/** @brief Write to the output buffer.
+ *
+ * @param outf Output function.
+ * @param buf  Buffer.
+ * @param len  Buffer length.
+ * @param ctx  Context passed to the %p outf.
+ */
+static inline void log_output_write(log_output_func_t outf, uint8_t *buf, size_t len, void *ctx)
+{
+	int processed;
+
+	while (len != 0) {
+		processed = outf(buf, len, ctx);
+		len -= processed;
+		buf += processed;
+	}
+}
+
 /** @brief Flush output buffer.
  *
  * @param output Pointer to the log output instance.
  */
-void log_output_flush(const struct log_output *output);
+static inline void log_output_flush(const struct log_output *output)
+{
+	log_output_write(output->func, output->buf, output->control_block->offset,
+			 output->control_block->ctx);
+	output->control_block->offset = 0;
+}
 
 /** @brief Function for setting user context passed to the output function.
  *

subsys/logging/log_output.c

@@ -150,28 +150,6 @@ static int print_formatted(const struct log_output *output,
 	return length;
 }
 
-static void buffer_write(log_output_func_t outf, uint8_t *buf, size_t len,
-			 void *ctx)
-{
-	int processed;
-
-	while (len != 0) {
-		processed = outf(buf, len, ctx);
-		len -= processed;
-		buf += processed;
-	}
-}
-
-
-void log_output_flush(const struct log_output *output)
-{
-	buffer_write(output->func, output->buf,
-		     output->control_block->offset,
-		     output->control_block->ctx);
-
-	output->control_block->offset = 0;
-}
-
 static inline bool is_leap_year(uint32_t year)
 {
 	return (((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0));
@@ -785,11 +763,9 @@ void log_output_dropped_process(const struct log_output *output, uint32_t cnt)
 	cnt = MIN(cnt, 9999);
 	len = snprintk(buf, sizeof(buf), "%d", cnt);
 
-	buffer_write(outf, (uint8_t *)prefix, sizeof(prefix) - 1,
-		     output->control_block->ctx);
-	buffer_write(outf, buf, len, output->control_block->ctx);
-	buffer_write(outf, (uint8_t *)postfix, sizeof(postfix) - 1,
-		     output->control_block->ctx);
+	log_output_write(outf, (uint8_t *)prefix, sizeof(prefix) - 1, output->control_block->ctx);
+	log_output_write(outf, buf, len, output->control_block->ctx);
+	log_output_write(outf, (uint8_t *)postfix, sizeof(postfix) - 1, output->control_block->ctx);
 }
 
 void log_output_timestamp_freq_set(uint32_t frequency)

subsys/logging/log_output_dict.c

@@ -12,18 +12,6 @@
 #include <zephyr/sys/__assert.h>
 #include <zephyr/sys/util.h>
 
-static void buffer_write(log_output_func_t outf, uint8_t *buf, size_t len,
-			 void *ctx)
-{
-	int processed;
-
-	do {
-		processed = outf(buf, len, ctx);
-		len -= processed;
-		buf += processed;
-	} while (len != 0);
-}
-
 void log_dict_output_msg_process(const struct log_output *output,
 				 struct log_msg *msg, uint32_t flags)
 {
@@ -40,19 +28,19 @@ void log_dict_output_msg_process(const struct log_output *output,
 
 	output_hdr.source = (source != NULL) ? log_source_id(source) : 0U;
 
-	buffer_write(output->func, (uint8_t *)&output_hdr, sizeof(output_hdr),
-		     (void *)output->control_block->ctx);
+	log_output_write(output->func, (uint8_t *)&output_hdr, sizeof(output_hdr),
+			 (void *)output->control_block->ctx);
 
 	size_t len;
 	uint8_t *data = log_msg_get_package(msg, &len);
 
 	if (len > 0U) {
-		buffer_write(output->func, data, len, (void *)output->control_block->ctx);
+		log_output_write(output->func, data, len, (void *)output->control_block->ctx);
 	}
 
 	data = log_msg_get_data(msg, &len);
 	if (len > 0U) {
-		buffer_write(output->func, data, len, (void *)output->control_block->ctx);
+		log_output_write(output->func, data, len, (void *)output->control_block->ctx);
 	}
 
 	log_output_flush(output);
@@ -65,6 +53,6 @@ void log_dict_output_dropped_process(const struct log_output *output, uint32_t c
 	msg.type = MSG_DROPPED_MSG;
 	msg.num_dropped_messages = MIN(cnt, 9999);
 
-	buffer_write(output->func, (uint8_t *)&msg, sizeof(msg),
-		     (void *)output->control_block->ctx);
+	log_output_write(output->func, (uint8_t *)&msg, sizeof(msg),
+			 (void *)output->control_block->ctx);
 }