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kernel: Print <DROP> at the beginning and not the end of dropped regions.

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This way there is a better indication of where the drop occurred.
This commit is contained in:
Augustin Cavalier
2021-09-16 15:05:48 -04:00
parent 7cde125283
commit 31caaec069
1 changed files with 10 additions and 6 deletions
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src/system/kernel/debug/debug.cpp
+10 -6
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@@ -1215,16 +1215,20 @@ syslog_sender(void* data)
if (length > (int32)SYSLOG_MAX_MESSAGE_LENGTH) if (length > (int32)SYSLOG_MAX_MESSAGE_LENGTH)
length = SYSLOG_MAX_MESSAGE_LENGTH; length = SYSLOG_MAX_MESSAGE_LENGTH;
length = ring_buffer_peek(sSyslogBuffer, sSyslogBufferOffset, uint8* message = (uint8*)sSyslogMessage->message;
(uint8*)sSyslogMessage->message, length);
sSyslogBufferOffset += length;
if (sSyslogDropped) { if (sSyslogDropped) {
// Add drop marker - since parts had to be dropped, it's memcpy(message, "<DROP>", 6);
// guaranteed that we have enough space in the buffer now. message += 6;
ring_buffer_write(sSyslogBuffer, (uint8*)"<DROP>", 6); if ((length + 6) > (int32)SYSLOG_MAX_MESSAGE_LENGTH)
length -= 6;
sSyslogDropped = false; sSyslogDropped = false;
} }
length = ring_buffer_peek(sSyslogBuffer, sSyslogBufferOffset,
message, length);
sSyslogBufferOffset += length;
length += (addr_t)message - (addr_t)sSyslogMessage->message;
release_spinlock(&sSpinlock); release_spinlock(&sSpinlock);
restore_interrupts(state); restore_interrupts(state);
} }