[njs] console.time() and console.timeEnd() methods.

[Dmitry Volyntsev]

details:   http://hg.nginx.org/njs/rev/46632012ac03
branches:  
changeset: 653:46632012ac03
user:      Artem S. Povalyukhin <artem.povaluhin at gmail.com>
date:      Wed Nov 14 18:14:49 2018 +0300
description:
console.time() and console.timeEnd() methods.

This fixes #62 issue on Github.

diffstat:

 njs/njs_shell.c              |  86 ++++++++++++++++++++++++++++++++++++++++++++
 njs/test/njs_expect_test.exp |  18 ++++++++-
 2 files changed, 103 insertions(+), 1 deletions(-)

diffs (156 lines):

diff -r 7f0f7d149709 -r 46632012ac03 njs/njs_shell.c
--- a/njs/njs_shell.c	Thu Nov 15 12:45:02 2018 +0300
+++ b/njs/njs_shell.c	Wed Nov 14 18:14:49 2018 +0300
@@ -14,6 +14,7 @@
 #include <fcntl.h>
 #include <stdlib.h>
 #include <sys/stat.h>
+#include <sys/time.h>
 #include <locale.h>
 
 #include <readline.h>
@@ -63,6 +64,10 @@ static njs_ret_t njs_ext_console_dump(nj
     nxt_uint_t nargs, njs_index_t unused);
 static njs_ret_t njs_ext_console_help(njs_vm_t *vm, njs_value_t *args,
     nxt_uint_t nargs, njs_index_t unused);
+static njs_ret_t njs_ext_console_time(njs_vm_t *vm, njs_value_t *args,
+    nxt_uint_t nargs, njs_index_t unused);
+static njs_ret_t njs_ext_console_time_end(njs_vm_t *vm, njs_value_t *args,
+    nxt_uint_t nargs, njs_index_t unused);
 
 
 static njs_external_t  njs_ext_console[] = {
@@ -102,6 +107,30 @@ static njs_external_t  njs_ext_console[]
       NULL,
       njs_ext_console_help,
       0 },
+
+    { nxt_string("time"),
+      NJS_EXTERN_METHOD,
+      NULL,
+      0,
+      NULL,
+      NULL,
+      NULL,
+      NULL,
+      NULL,
+      njs_ext_console_time,
+      0 },
+
+    { nxt_string("timeEnd"),
+      NJS_EXTERN_METHOD,
+      NULL,
+      0,
+      NULL,
+      NULL,
+      NULL,
+      NULL,
+      NULL,
+      njs_ext_console_time_end,
+      0 },
 };
 
 static njs_external_t  njs_externals[] = {
@@ -123,6 +152,9 @@ static njs_external_t  njs_externals[] =
 static njs_completion_t  njs_completion;
 
 
+static struct timeval njs_console_time;
+
+
 int
 main(int argc, char **argv)
 {
@@ -727,3 +759,57 @@ njs_ext_console_help(njs_vm_t *vm, njs_v
 
     return NJS_OK;
 }
+
+
+static njs_ret_t
+njs_ext_console_time(njs_vm_t *vm, njs_value_t *args, nxt_uint_t nargs,
+    njs_index_t unused)
+{
+    if (!njs_value_is_void(njs_arg(args, nargs, 1))) {
+        njs_vm_error(vm, "labels not implemented");
+        return NJS_ERROR;
+    }
+
+    vm->retval = njs_value_void;
+
+    gettimeofday(&njs_console_time, NULL);
+
+    return NJS_OK;
+}
+
+
+static njs_ret_t
+njs_ext_console_time_end(njs_vm_t *vm, njs_value_t *args, nxt_uint_t nargs,
+    njs_index_t unused)
+{
+    int64_t         us, ms;
+    struct timeval  tv;
+
+    gettimeofday(&tv, NULL);
+
+    if (!njs_value_is_void(njs_arg(args, nargs, 1))) {
+        njs_vm_error(vm, "labels not implemented");
+        return NJS_ERROR;
+    }
+
+    if (nxt_fast_path(njs_console_time.tv_sec || njs_console_time.tv_usec)) {
+
+        us = ((int64_t) tv.tv_sec - njs_console_time.tv_sec) * 1000000
+             + ((int64_t) tv.tv_usec - njs_console_time.tv_usec);
+
+        ms = us / 1000;
+        us = us % 1000;
+
+        printf("default: %" PRIu64 ".%03" PRIu64 "ms\n", ms, us);
+
+        njs_console_time.tv_sec = 0;
+        njs_console_time.tv_usec = 0;
+
+    } else {
+        printf("Timer \"default\" doesn’t exist.\n");
+    }
+
+    vm->retval = njs_value_void;
+
+    return NJS_OK;
+}
diff -r 7f0f7d149709 -r 46632012ac03 njs/test/njs_expect_test.exp
--- a/njs/test/njs_expect_test.exp	Thu Nov 15 12:45:02 2018 +0300
+++ b/njs/test/njs_expect_test.exp	Wed Nov 14 18:14:49 2018 +0300
@@ -80,7 +80,7 @@ njs_test {
 # Global completions, multiple partial match
 njs_test {
     {"cons\t\t"
-     "console*console.help*console.log*const"}
+     "console*console.help*console.time*const"}
 }
 
 njs_test {
@@ -190,6 +190,22 @@ njs_test {
      "console.help()\r\nVM built-in objects:"}
 }
 
+# console.time* functions
+njs_test {
+    {"console.time()\r\n"
+     "console.time()\r\nundefined\r\n>> "}
+    {"console.time(undefined)\r\n"
+     "console.time(undefined)\r\nundefined\r\n>> "}
+    {"console.timeEnd()\r\n"
+     "console.timeEnd()\r\ndefault: *.*ms\r\nundefined\r\n>> "}
+    {"console.time('a')\r\n"
+     "console.time('a')\r\nError: labels not implemented"}
+    {"console.timeEnd('a')\r\n"
+     "console.timeEnd('a')\r\nError: labels not implemented"}
+    {"console.timeEnd()\r\n"
+     "console.timeEnd()\r\nTimer \"default\" doesn’t exist."}
+}
+
 njs_test {
     {"console.ll()\r\n"
      "console.ll()\r\nTypeError: 'll' is not a function"}