9 files changed, 260 insertions, 2 deletions
diff --git a/tests/readme.txt b/tests/readme.txt
index 0d33a81c7..2cfc79f9a 100644
--- a/tests/readme.txt
+++ b/tests/readme.txt
@@ -3,8 +3,11 @@ Each test must have a filename of the form: ``t*.nim``
 
 Each test can contain a spec in a ``discard """"""`` block.
 
-The folder ``rodfiles`` contains special tests that test incremental 
+The folder ``rodfiles`` contains special tests that test incremental
 compilation via symbol files.
 
 The folder ``dll`` contains simple DLL tests.
 
+The folder ``realtimeGC`` contains a test for validating that the realtime GC
+can run properly without linking against the nimrtl.dll/so. It includes a C
+client and platform specific build files for manual compilation.
diff --git a/tests/realtimeGC/cmain.c b/tests/realtimeGC/cmain.c
new file mode 100644
index 000000000..e9a46d7ce
--- /dev/null
+++ b/tests/realtimeGC/cmain.c
@@ -0,0 +1,67 @@
+
+#ifdef WIN
+#include <windows.h>
+#else
+#include <dlfcn.h>
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <time.h>
+
+#define RUNTIME (15*60)
+
+
+typedef void (*pFunc)(void);
+
+int main(int argc, char* argv[])
+{
+    int i;
+    void* hndl;
+    pFunc status;
+    pFunc count;
+    pFunc checkOccupiedMem;
+
+#ifdef WIN
+    hndl = (void*) LoadLibrary((char const*)"./tests/realtimeGC/shared.dll");
+    status = (pFunc)GetProcAddress((HMODULE) hndl, (char const*)"status");
+    count = (pFunc)GetProcAddress((HMODULE) hndl, (char const*)"count");
+    checkOccupiedMem = (pFunc)GetProcAddress((HMODULE) hndl, (char const*)"checkOccupiedMem");
+#else /* OSX || NIX */
+    hndl = (void*) dlopen((char const*)"./tests/realtimeGC/libshared.so", RTLD_LAZY);
+    status = (pFunc) dlsym(hndl, (char const*)"status");
+    count = (pFunc) dlsym(hndl, (char const*)"count");
+    checkOccupiedMem = (pFunc) dlsym(hndl, (char const*)"checkOccupiedMem");
+#endif
+
+    assert(hndl);
+    assert(status);
+    assert(count);
+    assert(checkOccupiedMem);
+
+    time_t startTime = time((time_t*)0);
+    time_t runTime = (time_t)(RUNTIME);
+    time_t accumTime = 0;
+    while (accumTime < runTime) {
+        for (i = 0; i < 10; i++)
+            count();
+        /* printf("1. sleeping...\n"); */
+        sleep(1);
+        for (i = 0; i < 10; i++)
+            status();
+        /* printf("2. sleeping...\n"); */
+        sleep(1);
+        checkOccupiedMem();
+        accumTime = time((time_t*)0) - startTime;
+        /* printf("--- Minutes left to run: %d\n", (int)(runTime-accumTime)/60); */
+    }
+    printf("Cleaning up the shared object pointer...\n");
+#ifdef WIN
+    FreeLibrary((HMODULE)hndl);
+#else /* OSX || NIX */
+    dlclose(hndl);
+#endif
+    printf("Done\n");
+    return 0;
+}
diff --git a/tests/realtimeGC/main.nim.cfg b/tests/realtimeGC/main.nim.cfg
new file mode 100644
index 000000000..fed4fa471
--- /dev/null
+++ b/tests/realtimeGC/main.nim.cfg
@@ -0,0 +1,6 @@
+
+--app:console
+--threads:on
+
+-d:release
+-d:useRealtimeGC
diff --git a/tests/realtimeGC/nmain.nim b/tests/realtimeGC/nmain.nim
new file mode 100644
index 000000000..c9f558dbc
--- /dev/null
+++ b/tests/realtimeGC/nmain.nim
@@ -0,0 +1,46 @@
+discard """
+  cmd: "nim $target --debuginfo $options $file"
+  output: "Done"
+"""
+
+import times, os, threadpool
+
+const RUNTIME = 15 * 60 # 15 minutes
+
+when defined(windows):
+  const dllname = "./tests/realtimeGC/shared.dll"
+elif defined(macosx):
+  const dllname = "./tests/realtimeGC/libshared.dylib"
+else:
+  const dllname = "./tests/realtimeGC/libshared.so"
+
+proc status() {.importc: "status", dynlib: dllname.}
+proc count() {.importc: "count", dynlib: dllname.}
+proc checkOccupiedMem() {.importc: "checkOccupiedMem", dynlib: dllname.}
+
+proc process() =
+  let startTime = getTime()
+  let runTime = cast[Time](RUNTIME) #
+  var accumTime: Time
+  while accumTime < runTime:
+    for i in 0..10:
+      count()
+    # echo("1. sleeping... ")
+    sleep(500)
+    for i in 0..10:
+      status()
+    # echo("2. sleeping... ")
+    sleep(500)
+    checkOccupiedMem()
+    accumTime = cast[Time]((getTime() - startTime))
+    # echo("--- Minutes left to run: ", int(int(runTime-accumTime)/60))
+
+proc main() =
+  process()
+  # parallel:
+  #   for i in 0..0:
+  #     spawn process()
+  # sync()
+  echo("Done")
+
+main()
diff --git a/tests/realtimeGC/readme.txt b/tests/realtimeGC/readme.txt
new file mode 100644
index 000000000..035a00001
--- /dev/null
+++ b/tests/realtimeGC/readme.txt
@@ -0,0 +1,21 @@
+Test the realtime GC without linking nimrtl.dll/so.
+
+Note, this is a long running test, default is 35 minutes. To change the
+the run time see RUNTIME in main.nim and main.c.
+
+You can build shared.nim, main.nim, and main.c by running make (nix systems)
+or maike.bat (Windows systems). They both assume GCC and that it's in your
+path. Output: shared.(dll/so), camin(.exe), nmain(.exe).
+
+To run the test: execute either nmain or cmain in a shell window.
+
+To build buy hand:
+
+  - build the shared object (shared.nim):
+
+    $ nim c shared.nim
+
+  - build the client executables:
+
+    $ nim c -o:nmain main.nim
+    $ gcc -o cmain main.c -ldl
diff --git a/tests/realtimeGC/shared.nim b/tests/realtimeGC/shared.nim
new file mode 100644
index 000000000..2d1dd6c3c
--- /dev/null
+++ b/tests/realtimeGC/shared.nim
@@ -0,0 +1,63 @@
+discard """
+  cmd: "nim $target --debuginfo --hints:on --app:lib $options $file"
+"""
+
+import strutils
+
+# Global state, accessing with threads, no locks. Don't do this at
+# home.
+var gCounter: uint64
+var gTxStatus: bool
+var gRxStatus: bool
+var gConnectStatus: bool
+var gPttStatus: bool
+var gComm1Status: bool
+var gComm2Status: bool
+
+proc getTxStatus(): string =
+  result = if gTxStatus: "On" else: "Off"
+  gTxStatus = not gTxStatus
+
+proc getRxStatus(): string =
+  result = if gRxStatus: "On" else: "Off"
+  gRxStatus = not gRxStatus
+
+proc getConnectStatus(): string =
+  result = if gConnectStatus: "Yes" else: "No"
+  gConnectStatus = not gConnectStatus
+
+proc getPttStatus(): string =
+  result = if gPttStatus: "PTT: On" else: "PTT: Off"
+  gPttStatus = not gPttStatus
+
+proc getComm1Status(): string =
+  result = if gComm1Status: "On" else: "Off"
+  gComm1Status = not gComm1Status
+
+proc getComm2Status(): string =
+  result = if gComm2Status: "On" else: "Off"
+  gComm2Status = not gComm2Status
+
+proc status() {.exportc: "status", dynlib.} =
+  var tx_status = getTxStatus()
+  var rx_status = getRxStatus()
+  var connected = getConnectStatus()
+  var ptt_status = getPttStatus()
+  var str1: string = "[PilotEdge] Connected: $1  TX: $2  RX: $3" % [connected, tx_status, rx_status]
+  var a = getComm1Status()
+  var b = getComm2Status()
+  var str2: string = "$1  COM1: $2  COM2: $3" % [ptt_status, a, b]
+  # echo(str1)
+  # echo(str2)
+
+proc count() {.exportc: "count", dynlib.} =
+  var temp: uint64
+  for i in 0..100_000:
+    temp += 1
+  gCounter += 1
+  # echo("gCounter: ", gCounter)
+
+proc checkOccupiedMem() {.exportc: "checkOccupiedMem", dynlib.} =
+  if getOccupiedMem() > 10_000_000:
+    quit 1
+  discard
diff --git a/tests/realtimeGC/shared.nim.cfg b/tests/realtimeGC/shared.nim.cfg
new file mode 100644
index 000000000..e153b26fa
--- /dev/null
+++ b/tests/realtimeGC/shared.nim.cfg
@@ -0,0 +1,5 @@
+--app:lib
+--threads:on
+
+-d:release
+-d:useRealtimeGC
diff --git a/tests/testament/categories.nim b/tests/testament/categories.nim
index 07a2421a6..4de1edeee 100644
--- a/tests/testament/categories.nim
+++ b/tests/testament/categories.nim
@@ -138,6 +138,18 @@ proc gcTests(r: var TResults, cat: Category, options: string) =
   test "stackrefleak"
   test "cyclecollector"
 
+proc longGCTests(r: var TResults, cat: Category, options: string) =
+  when defined(windows):
+    let cOptions = "gcc -ldl -DWIN"
+  else:
+    let cOptions = "gcc -ldl"
+
+  var c = initResults()
+  # According to ioTests, this should compile the file
+  testNoSpec c, makeTest("tests/realtimeGC/shared", options, cat, actionCompile)
+  testC r, makeTest("tests/realtimeGC/cmain", cOptions, cat, actionRun)
+  testSpec r, makeTest("tests/realtimeGC/nmain", options & "--threads: on", cat, actionRun)
+
 # ------------------------- threading tests -----------------------------------
 
 proc threadTests(r: var TResults, cat: Category, options: string) =
@@ -340,6 +352,8 @@ proc processCategory(r: var TResults, cat: Category, options: string) =
     dllTests(r, cat, options)
   of "gc":
     gcTests(r, cat, options)
+  of "longgc":
+    longGCTests(r, cat, options)
   of "debugger":
     debuggerTests(r, cat, options)
   of "manyloc":
diff --git a/tests/testament/tester.nim b/tests/testament/tester.nim
index b3e65959a..0308ce940 100644
--- a/tests/testament/tester.nim
+++ b/tests/testament/tester.nim
@@ -89,6 +89,25 @@ proc callCompiler(cmdTemplate, filename, options: string,
   elif suc =~ pegSuccess:
     result.err = reSuccess
 
+proc callCCompiler(cmdTemplate, filename, options: string,
+                  target: TTarget): TSpec =
+  let c = parseCmdLine(cmdTemplate % ["target", targetToCmd[target],
+                       "options", options, "file", filename.quoteShell])
+  var p = startProcess(command="gcc", args=c[5.. ^1],
+                       options={poStdErrToStdOut, poUsePath})
+  let outp = p.outputStream
+  var x = newStringOfCap(120)
+  result.nimout = ""
+  result.msg = ""
+  result.file = ""
+  result.outp = ""
+  result.line = -1
+  while outp.readLine(x.TaintedString) or running(p):
+    result.nimout.add(x & "\n")
+  close(p)
+  if p.peekExitCode == 0:
+    result.err = reSuccess
+
 proc initResults: TResults =
   result.total = 0
   result.passed = 0
@@ -257,8 +276,22 @@ proc testNoSpec(r: var TResults, test: TTest) =
   r.addResult(test, "", given.msg, given.err)
   if given.err == reSuccess: inc(r.passed)
 
+proc testC(r: var TResults, test: TTest) =
+  # runs C code. Doesn't support any specs, just goes by exit code.
+  let tname = test.name.addFileExt(".c")
+  inc(r.total)
+  styledEcho "Processing ", fgCyan, extractFilename(tname)
+  var given = callCCompiler(cmdTemplate, test.name & ".c", test.options, test.target)
+  if given.err != reSuccess:
+    r.addResult(test, "", given.msg, given.err)
+  elif test.action == actionRun:
+    let exeFile = changeFileExt(test.name, ExeExt)
+    var (buf, exitCode) = execCmdEx(exeFile, options = {poStdErrToStdOut, poUseShell})
+    if exitCode != 0: given.err = reExitCodesDiffer
+  if given.err == reSuccess: inc(r.passed)
+
 proc makeTest(test, options: string, cat: Category, action = actionCompile,
-              target = targetC): TTest =
+              target = targetC, env: string = ""): TTest =
   # start with 'actionCompile', will be overwritten in the spec:
   result = TTest(cat: cat, name: test, options: options,
                  target: target, action: action)