original files of m241

2026-07-30 11:19:44 +05:30
parent 170c2b3f3a
commit afc7070c1f
12254 changed files with 7655111 additions and 0 deletions
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+/* pxTraceStreamBufferLibP.h - private header for POSIX trace buffer */
+
+/* Copyright 2005-2006, 2010, 2012 Wind River Systems, Inc.
+ *
+ * The right to copy, distribute, modify or otherwise make use 
+ * of this software may be licensed only pursuant to the terms 
+ * of an applicable Wind River license agreement. 
+ */ 
+
+/*
+modification history
+--------------------
+01d,23jul12,wzc  WIND00358305 - Remove building warnings.
+01c,29apr10,pad  Moved extern C statement after include statements.
+01b,01aug06,tcr  fix format
+01a,15nov05,tcr  created
+*/
+
+/*
+DESCRIPTION
+This file contains definitions for the in-memory buffer of the POSIX trace
+facility in RTPs.
+*/
+
+#ifndef __INCpxTraceStreamBufferLibPh
+#define __INCpxTraceStreamBufferLibPh
+
+#include <base/b_pthread_t.h>
+#include <base/b_trace_attr_t.h>
+#include <base/b_trace_event_id_t.h>
+#include <base/b_struct_posix_trace_event_info.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * overrunState tracks whether, and how much, of the overrun data has been
+ * handled.
+ *
+ * 0 - No overrun
+ * 1 - Overrun detected, no events transmitted
+ * 2 - Overrun over, OVERRUN event transmitted but not RESUME
+ *
+ *
+ * State      Condition                    Action                    Next state
+ *
+ * 0    | Read                  |                                          |  0
+ * 0    | Write - No event loss |                                          |  0
+ * 0    | Write - Event lost    | Drop event, and save time of lost event  |  1
+ *      |                       | in overrunStart                          |
+ * 1    | Event read            | Send OVERRUN event                       |  2
+ * 1    | Write                 |                                          |  2
+ * 2    | Read                  | Send RESUME event, with time of next     |  0
+ *      |                       | event in buffer                          |
+ * 2    | Write                 |                                          |  1
+ *
+ */
+ 
+/* typedefs */
+
+typedef struct trace_stream_buffer
+    {
+    struct trace_stream *       pStream;
+    size_t                      readIndex;
+    size_t                      writeIndex;
+    size_t                      freeSpace;
+    char *                      dataBlockStart;
+    size_t                      dataBlockSizeRequested;
+    size_t                      dataBlockSizeActual;    
+    SEM_ID                      ptrUpdateSem;
+    SEM_ID                      dataAvailableSem;
+    int                         overrunState;
+    struct timespec             overrunStartTime;
+    pid_t                       overrunPid;
+    pthread_t                   overrunThreadId;
+    void *                      overrunProgAddress;
+    } TRACE_STREAM_BUFFER;
+
+typedef unsigned char           TRACE_EVENT_TRUNCATION_TYPE;
+
+/* function declarations */
+
+extern int pxTraceStreamBufferCreate (trace_attr_t * pAttr,
+                                      struct trace_stream * pStream);
+
+extern void pxTraceStreamBufferDelete (TRACE_STREAM_BUFFER * pBuffer);
+
+extern void pxTraceStreamBufferClear (TRACE_STREAM_BUFFER * pBuffer);
+
+extern STATUS pxTraceStreamBufferWrite (TRACE_STREAM_BUFFER * pBuffer,
+                                        struct posix_trace_event_info * evtInfo,
+                                        char * src);
+extern int pxTraceStreamBufferRead (TRACE_STREAM_BUFFER * pBuffer,
+                                       struct posix_trace_event_info * evtInfo,
+                                       char * dest, size_t dataSize,
+                                       size_t * pNumBytesRead,
+                                       int * pUnavailable, int timeout);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __INCpxTraceStreamBufferLibPh */
+