halide_start_clock 55 src/runtime/linux_clock.cpp WEAK int halide_start_clock(void *user_context) { halide_start_clock 24 src/runtime/osx_clock.cpp WEAK int halide_start_clock(void *user_context) { halide_start_clock 27 src/runtime/posix_clock.cpp WEAK int halide_start_clock(void *user_context) { halide_start_clock 19 src/runtime/windows_clock.cpp WEAK int halide_start_clock(void *user_context) {