From a914f340ae5b267dc3ab36c1156c795b8fa18f5d Mon Sep 17 00:00:00 2001
From: Shih-wei Liao <sliao@google.com>
Date: Mon, 8 Nov 2010 01:33:59 -0800
Subject: Add caching support of BCC binaries.

Change-Id: I1e75bb84d88319cb6f1bbe6d907cf6e8ed546142
---
 libs/rs/rs.spec       |  1 +
 libs/rs/rsScriptC.cpp | 25 ++++++++++++++++++-------
 libs/rs/rsScriptC.h   |  5 +----
 3 files changed, 20 insertions(+), 11 deletions(-)

(limited to 'libs')

diff --git a/libs/rs/rs.spec b/libs/rs/rs.spec
index 76db14f..1b584c8 100644
--- a/libs/rs/rs.spec
+++ b/libs/rs/rs.spec
@@ -320,6 +320,7 @@ ScriptCSetText {
 	}
 
 ScriptCCreate {
+        param const char * resName
 	ret RsScript
 	}
 
diff --git a/libs/rs/rsScriptC.cpp b/libs/rs/rsScriptC.cpp
index ec7780e..6587b51 100644
--- a/libs/rs/rsScriptC.cpp
+++ b/libs/rs/rsScriptC.cpp
@@ -396,15 +396,25 @@ static BCCvoid* symbolLookup(BCCvoid* pContext, const BCCchar* name) {
 extern const char rs_runtime_lib_bc[];
 extern unsigned rs_runtime_lib_bc_size;
 
-void ScriptCState::runCompiler(Context *rsc, ScriptC *s) {
+void ScriptCState::runCompiler(Context *rsc, ScriptC *s, const char *resName) {
     {
-        StopWatch compileTimer("RenderScript compile time");
         s->mBccScript = bccCreateScript();
         s->mEnviroment.mIsThreadable = true;
-        bccScriptBitcode(s->mBccScript, s->mEnviroment.mScriptText, s->mEnviroment.mScriptTextLength);
-        //bccLinkBitcode(s->mBccScript, rs_runtime_lib_bc, rs_runtime_lib_bc_size);
         bccRegisterSymbolCallback(s->mBccScript, symbolLookup, s);
-        bccCompileScript(s->mBccScript);
+        // bccReadBC() reads in the BitCode, if no cache file corresponding to
+        // the resName is found. Otherwise, bccReadBC() returns a negative value
+        // and the "else" branch will be taken.
+        if (bccReadBC(s->mBccScript,
+                      s->mEnviroment.mScriptText,
+                      s->mEnviroment.mScriptTextLength,
+                      resName) >= 0) {
+          //bccLinkBC(s->mBccScript, rs_runtime_lib_bc, rs_runtime_lib_bc_size);
+          bccCompileBC(s->mBccScript);
+        } else {
+          // bccReadBC returns a neagative value: Didn't read any script,
+          // So, use cached binary instead
+          bccLoadBinary(s->mBccScript);
+        }
         bccGetScriptLabel(s->mBccScript, "root", (BCCvoid**) &s->mProgram.mRoot);
         bccGetScriptLabel(s->mBccScript, "init", (BCCvoid**) &s->mProgram.mInit);
     }
@@ -518,14 +528,15 @@ void rsi_ScriptCSetText(Context *rsc, const char *text, uint32_t len) {
     ss->mScript->mEnviroment.mScriptTextLength = len;
 }
 
-RsScript rsi_ScriptCCreate(Context * rsc) {
+RsScript rsi_ScriptCCreate(Context * rsc, const char *resName)
+{
     ScriptCState *ss = &rsc->mScriptC;
 
     ObjectBaseRef<ScriptC> s(ss->mScript);
     ss->mScript.clear();
     s->incUserRef();
 
-    ss->runCompiler(rsc, s.get());
+    ss->runCompiler(rsc, s.get(), resName);
     ss->clear(rsc);
     return s.get();
 }
diff --git a/libs/rs/rsScriptC.h b/libs/rs/rsScriptC.h
index 7ca33ac..4f0dff3 100644
--- a/libs/rs/rsScriptC.h
+++ b/libs/rs/rsScriptC.h
@@ -81,7 +81,7 @@ public:
     void init(Context *rsc);
 
     void clear(Context *rsc);
-    void runCompiler(Context *rsc, ScriptC *s);
+    void runCompiler(Context *rsc, ScriptC *s, const char *resName);
 
     struct SymbolTable_t {
         const char * mName;
@@ -98,6 +98,3 @@ public:
 }
 }
 #endif
-
-
-
-- 
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