glestrace: Framework for GLES tracing library

This patch provides a framework for tracing GLES 1.0 and 2.0
functions. It is missing a lot of features, but here are the
things it accomplishes:

- Stop building the glesv2dbg library, and build the
    glestrace library instead.
- Replace the hooks for glesv2dbg with the ones for glestrace.
- Add the basics for the trace library. Currently, this
    traces all GL functions, but not all required data is
    sent for all the functions.  As a result, it will not
    be possible to reconstruct the entire GL state on the
    host side.

The files gltrace.pb.* and gltrace_api.* are both generated
using the tools/genapi.py script.

Change-Id: Id60a468f7278657f008bc6ea1df01f9bdfecfdd3

6 files changed, 32 insertions, 48 deletions

diff --git a/opengl/libs/EGL/Loader.cpp b/opengl/libs/EGL/Loader.cpp
index 325193c..8a8898b 100644
--- a/opengl/libs/EGL/Loader.cpp
+++ b/opengl/libs/EGL/Loader.cpp
@@ -28,7 +28,7 @@
 #include <EGL/egl.h>
 
 #include "egldefs.h"
-#include "glesv2dbg.h"
+#include "glestrace.h"
 #include "hooks.h"
 #include "Loader.h"
 
@@ -157,7 +157,7 @@ Loader::Loader()
 
 Loader::~Loader()
 {
-    StopDebugServer();
+    GLTrace_stop();
 }
 
 const char* Loader::getTag(int dpy, int impl)
diff --git a/opengl/libs/EGL/egl.cpp b/opengl/libs/EGL/egl.cpp
index 6ad06af..14745b3 100644
--- a/opengl/libs/EGL/egl.cpp
+++ b/opengl/libs/EGL/egl.cpp
@@ -37,7 +37,7 @@
 #include "egldefs.h"
 #include "egl_impl.h"
 #include "egl_tls.h"
-#include "glesv2dbg.h"
+#include "glestrace.h"
 #include "hooks.h"
 #include "Loader.h"
 
@@ -67,7 +67,6 @@ static int sEGLTraceLevel;
 static int sEGLApplicationTraceLevel;
 
 extern gl_hooks_t gHooksTrace;
-extern gl_hooks_t gHooksDebug;
 
 static inline void setGlTraceThreadSpecific(gl_hooks_t const *value) {
     pthread_setspecific(gGLTraceKey, value);
@@ -89,27 +88,17 @@ void initEglTraceLevel() {
     char procPath[128] = {};
     sprintf(procPath, "/proc/%ld/cmdline", pid);
     FILE * file = fopen(procPath, "r");
-    if (file)
-    {
+    if (file) {
         char cmdline[256] = {};
-        if (fgets(cmdline, sizeof(cmdline) - 1, file))
-        {
+        if (fgets(cmdline, sizeof(cmdline) - 1, file)) {
             if (!strcmp(value, cmdline))
                 gEGLDebugLevel = 1;
         }
         fclose(file);
     }
 
-    if (gEGLDebugLevel > 0)
-    {
-        property_get("debug.egl.debug_port", value, "5039");
-        const unsigned short port = (unsigned short)atoi(value);
-        property_get("debug.egl.debug_forceUseFile", value, "0");
-        const bool forceUseFile = (bool)atoi(value);
-        property_get("debug.egl.debug_maxFileSize", value, "8");
-        const unsigned int maxFileSize = atoi(value) << 20;
-        property_get("debug.egl.debug_filePath", value, "/data/local/tmp/dump.gles2dbg");
-        StartDebugServer(port, forceUseFile, maxFileSize, value);
+    if (gEGLDebugLevel > 0) {
+        GLTrace_start();
     }
 }
 
@@ -119,7 +108,7 @@ void setGLHooksThreadSpecific(gl_hooks_t const *value) {
         setGlThreadSpecific(&gHooksTrace);
     } else if (gEGLDebugLevel > 0 && value != &gHooksNoContext) {
         setGlTraceThreadSpecific(value);
-        setGlThreadSpecific(&gHooksDebug);
+        setGlThreadSpecific(GLTrace_getGLHooks());
     } else {
         setGlThreadSpecific(value);
     }
diff --git a/opengl/libs/EGL/eglApi.cpp b/opengl/libs/EGL/eglApi.cpp
index a63d5b0..ceb49d4 100644
--- a/opengl/libs/EGL/eglApi.cpp
+++ b/opengl/libs/EGL/eglApi.cpp
@@ -37,7 +37,7 @@
 
 #include "egl_impl.h"
 #include "egl_tls.h"
-#include "glesv2dbg.h"
+#include "glestrace.h"
 #include "hooks.h"
 
 #include "egl_display.h"
@@ -110,7 +110,6 @@ extern EGLBoolean egl_init_drivers();
 extern const __eglMustCastToProperFunctionPointerType gExtensionForwarders[MAX_NUMBER_OF_GL_EXTENSIONS];
 extern int gEGLDebugLevel;
 extern gl_hooks_t gHooksTrace;
-extern gl_hooks_t gHooksDebug;
 } // namespace android;
 
 // ----------------------------------------------------------------------------
@@ -514,6 +513,10 @@ EGLContext eglCreateContext(EGLDisplay dpy, EGLConfig config,
             }
             egl_context_t* c = new egl_context_t(dpy, context, config,
                     dp->configs[intptr_t(config)].impl, cnx, version);
+#if EGL_TRACE
+            if (gEGLDebugLevel > 0)
+                GLTrace_eglCreateContext(version, c);
+#endif
             return c;
         }
     }
@@ -655,9 +658,10 @@ EGLBoolean eglMakeCurrent(  EGLDisplay dpy, EGLSurface draw,
         if (ctx != EGL_NO_CONTEXT) {
             setGLHooksThreadSpecific(c->cnx->hooks[c->version]);
             egl_tls_t::setContext(ctx);
-            if (gEGLDebugLevel > 0) {
-                CreateDbgContext(c->version, c->cnx->hooks[c->version]);
-            }
+#if EGL_TRACE
+            if (gEGLDebugLevel > 0)
+                GLTrace_eglMakeCurrent(c->version, c->cnx->hooks[c->version]);
+#endif
             _c.acquire();
             _r.acquire();
             _d.acquire();
@@ -884,6 +888,10 @@ __eglMustCastToProperFunctionPointerType eglGetProcAddress(const char *procname)
                 "no more slots for eglGetProcAddress(\"%s\")",
                 procname);
 
+#if EGL_TRACE
+        gl_hooks_t *debugHooks = GLTrace_getGLHooks();
+#endif
+
         if (!addr && (slot < MAX_NUMBER_OF_GL_EXTENSIONS)) {
             bool found = false;
             for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
@@ -894,7 +902,7 @@ __eglMustCastToProperFunctionPointerType eglGetProcAddress(const char *procname)
                     cnx->hooks[GLESv1_INDEX]->ext.extensions[slot] =
                     cnx->hooks[GLESv2_INDEX]->ext.extensions[slot] =
 #if EGL_TRACE
-                    gHooksDebug.ext.extensions[slot] = gHooksTrace.ext.extensions[slot] =
+                    debugHooks->ext.extensions[slot] = gHooksTrace.ext.extensions[slot] =
 #endif
                             cnx->egl.eglGetProcAddress(procname);
                 }
@@ -922,10 +930,6 @@ __eglMustCastToProperFunctionPointerType eglGetProcAddress(const char *procname)
 
 EGLBoolean eglSwapBuffers(EGLDisplay dpy, EGLSurface draw)
 {
-    EGLBoolean Debug_eglSwapBuffers(EGLDisplay dpy, EGLSurface draw);
-    if (gEGLDebugLevel > 0)
-        Debug_eglSwapBuffers(dpy, draw);
-
     clearError();
 
     egl_display_t const * const dp = validate_display(dpy);
@@ -935,6 +939,11 @@ EGLBoolean eglSwapBuffers(EGLDisplay dpy, EGLSurface draw)
     if (!_s.get())
         return setError(EGL_BAD_SURFACE, EGL_FALSE);
 
+#if EGL_TRACE
+    if (gEGLDebugLevel > 0)
+        GLTrace_eglSwapBuffers(dpy, draw);
+#endif
+
     egl_surface_t const * const s = get_surface(draw);
     return s->cnx->egl.eglSwapBuffers(dp->disp[s->impl].dpy, s->surface);
 }
@@ -1154,7 +1163,10 @@ EGLBoolean eglReleaseThread(void)
         }
     }
     egl_tls_t::clearTLS();
-    dbgReleaseThread();
+#if EGL_TRACE
+    if (gEGLDebugLevel > 0)
+        GLTrace_eglReleaseThread();
+#endif
     return EGL_TRUE;
 }
 
diff --git a/opengl/libs/EGL/egl_tls.cpp b/opengl/libs/EGL/egl_tls.cpp
index b341ddb..6946ecd 100644
--- a/opengl/libs/EGL/egl_tls.cpp
+++ b/opengl/libs/EGL/egl_tls.cpp
@@ -33,7 +33,7 @@ pthread_key_t egl_tls_t::sKey = -1;
 pthread_mutex_t egl_tls_t::sLockKey = PTHREAD_MUTEX_INITIALIZER;
 
 egl_tls_t::egl_tls_t()
-    : error(EGL_SUCCESS), ctx(0), logCallWithNoContext(EGL_TRUE), dbg(0) {
+    : error(EGL_SUCCESS), ctx(0), logCallWithNoContext(EGL_TRUE) {
 }
 
 const char *egl_tls_t::egl_strerror(EGLint err) {
diff --git a/opengl/libs/EGL/egl_tls.h b/opengl/libs/EGL/egl_tls.h
index 78b0b2f..2442ca0 100644
--- a/opengl/libs/EGL/egl_tls.h
+++ b/opengl/libs/EGL/egl_tls.h
@@ -37,7 +37,6 @@ class egl_tls_t {
     EGLint      error;
     EGLContext  ctx;
     EGLBoolean  logCallWithNoContext;
-    DbgContext* dbg;
 
     egl_tls_t();
     static void validateTLSKey();
diff --git a/opengl/libs/EGL/trace.cpp b/opengl/libs/EGL/trace.cpp
index 0e934e2..bd6c348 100644
--- a/opengl/libs/EGL/trace.cpp
+++ b/opengl/libs/EGL/trace.cpp
@@ -375,22 +375,6 @@ extern "C" {
 #undef TRACE_GL_VOID
 #undef TRACE_GL
 
-// declare all Debug_gl* functions
-#define GL_ENTRY(_r, _api, ...) _r Debug_##_api ( __VA_ARGS__ );
-#include "glesv2dbg_functions.h"
-#undef GL_ENTRY
-
-#define GL_ENTRY(_r, _api, ...) Debug_ ## _api,
-EGLAPI gl_hooks_t gHooksDebug = {
-    {
-        #include "entries.in"
-    },
-    {
-        {0}
-    }
-};
-#undef GL_ENTRY
-
 // ----------------------------------------------------------------------------
 }; // namespace android
 // ----------------------------------------------------------------------------