share dm and command flags

Share command flags between dm and unit tests.
Also, allow dm's core to be included by itself and iOSShell.

Command line flags that are the same (or nearly the same) in DM
and in skia_tests have been moved to common_flags. Authors,
please check to see that the shared common flag is correct for
the tool.

For iOS, the 'tool_main' entry point has a wrapper to allow multiple
tools to be statically linked in the iOSShell.
Since SkCommandLineFlags::Parse can only be called once, these calls
are disabled in the IOS build.

Since the iOS app directory is dynamically assigned a name, use '@' to
select it. (This is the same convention chosen by the Mobile Harness
iOS file system utilities.)

Move the heart of dm.gyp into dm.gypi so that it can be included by
itself and iOSShell.gyp.

Add tools/flags/SkCommonFlags.* to define and declare common
command line flags.

Add support for dm to iOSShell.

BUG=skia:
R=scroggo@google.com, mtklein@google.com, jvanverth@google.com, bsalomon@google.com

Author: caryclark@google.com

Review URL: https://codereview.chromium.org/389653004

1 files changed, 6 insertions, 16 deletions

diff --git a/bench/nanobench.cpp b/bench/nanobench.cpp
index 0af05527f1..a3cd4956de 100644
--- a/bench/nanobench.cpp
+++ b/bench/nanobench.cpp
@@ -14,7 +14,7 @@
 #include "Timer.h"
 
 #include "SkCanvas.h"
-#include "SkCommandLineFlags.h"
+#include "SkCommonFlags.h"
 #include "SkForceLinking.h"
 #include "SkGraphics.h"
 #include "SkString.h"
@@ -38,26 +38,16 @@ DEFINE_int32(samples, 10, "Number of samples to measure for each bench.");
 DEFINE_int32(overheadLoops, 100000, "Loops to estimate timer overhead.");
 DEFINE_double(overheadGoal, 0.0001,
               "Loop until timer overhead is at most this fraction of our measurments.");
-DEFINE_string(match, "", "The usual filters on file names of benchmarks to measure.");
-DEFINE_bool2(quiet, q, false, "Print only bench name and minimum sample.");
-DEFINE_bool2(verbose, v, false, "Print all samples.");
-DEFINE_string(config, "nonrendering 8888 gpu", "Configs to measure. Options: "
-              "565 8888 gpu nonrendering debug nullgpu msaa4 msaa16 nvprmsaa4 nvprmsaa16 angle");
 DEFINE_double(gpuMs, 5, "Target bench time in millseconds for GPU.");
 DEFINE_int32(gpuFrameLag, 5, "Overestimate of maximum number of frames GPU allows to lag.");
 
-DEFINE_bool(cpu, true, "Master switch for CPU-bound work.");
-DEFINE_bool(gpu, true, "Master switch for GPU-bound work.");
-
 DEFINE_string(outResultsFile, "", "If given, write results here as JSON.");
-DEFINE_bool(resetGpuContext, true, "Reset the GrContext before running each bench.");
 DEFINE_int32(maxCalibrationAttempts, 3,
              "Try up to this many times to guess loops for a bench, or skip the bench.");
 DEFINE_int32(maxLoops, 1000000, "Never run a bench more times than this.");
 DEFINE_string(key, "", "Space-separated key/value pairs to add to JSON.");
 DEFINE_string(gitHash, "", "Git hash to add to JSON.");
 
-
 static SkString humanize(double ms) {
     if (ms > 1e+3) return SkStringPrintf("%.3gs",  ms/1e3);
     if (ms < 1e-3) return SkStringPrintf("%.3gns", ms*1e6);
@@ -298,11 +288,10 @@ static void fill_gpu_options(ResultsWriter* log, SkGLContextHelper* ctx) {
 }
 #endif
 
-int tool_main(int argc, char** argv);
-int tool_main(int argc, char** argv) {
+int nanobench_main();
+int nanobench_main() {
     SetupCrashHandler();
     SkAutoGraphics ag;
-    SkCommandLineFlags::Parse(argc, argv);
 
     if (FLAGS_runOnce) {
         FLAGS_samples     = 1;
@@ -429,7 +418,8 @@ int tool_main(int argc, char** argv) {
 }
 
 #if !defined SK_BUILD_FOR_IOS
-int main(int argc, char * const argv[]) {
-    return tool_main(argc, (char**) argv);
+int main(int argc, char** argv) {
+    SkCommandLineFlags::Parse(argc, argv);
+    return nanobench_main();
 }
 #endif