Function Init

vips/vips.go:51–93

(c *Config)

}

func Init(c *Config) error {
	if err := c.Validate(); err != nil {
		return err
	}

	config = c

	runtime.LockOSThread()
	defer runtime.UnlockOSThread()

	// vips_initialize must be called only once
	var initErr error
	initOnce.Do(func() {
		if err := C.vips_initialize(); err != 0 {
			C.vips_shutdown()
			initErr = newVipsError("unable to start vips!")
		}
	})
	if initErr != nil {
		return initErr
	}

	// Disable libvips cache. Since processing pipeline is fine tuned, we won't get much profit from it.
	// Enabled cache can cause SIGSEGV on Musl-based systems like Alpine.
	C.vips_cache_set_max_mem(0)
	C.vips_cache_set_max(0)

	if lambdaFn := os.Getenv("AWS_LAMBDA_FUNCTION_NAME"); len(lambdaFn) > 0 {
		// Set vips concurrency level to GOMAXPROCS if we are running in AWS Lambda
		// since each function processes only one request at a time
		// so we can use all available CPU cores
		C.vips_concurrency_set(C.int(max(1, runtime.GOMAXPROCS(0))))
	} else {
		C.vips_concurrency_set(1)
	}

	C.vips_leak_set(gbool(config.LeakCheck))
	C.vips_cache_set_trace(gbool(config.CacheTrace))

	gifResolutionLimit = int(C.gif_resolution_limit())

	return nil
}

func Shutdown() {
	C.vips_shutdown()