halide_current_time_ns 64 src/runtime/linux_clock.cpp WEAK int64_t halide_current_time_ns(void *user_context) { halide_current_time_ns 35 src/runtime/osx_clock.cpp WEAK int64_t halide_current_time_ns(void *user_context) { halide_current_time_ns 39 src/runtime/posix_clock.cpp WEAK int64_t halide_current_time_ns(void *user_context) { halide_current_time_ns 29 src/runtime/windows_clock.cpp WEAK int64_t halide_current_time_ns(void *user_context) {