[R] Hanging -- please help decipher event report

[jeremyd]

I'm running some code in R64 on a Mac OS 10.6.8 that calls a C program
through the dyn.load() function. The code hangs after several days of
computation, and I've having trouble locating the problem. Can anyone
decipher this info from the error report, and tell me if this is a problem
in R64, or in the C code? Thanks very much in advance.

A few hints: "pa" is the name of the C function in R, and "polio_3A.so" is
the compiled code. I can post the R code or the C code if anyone needs to
see it, but my first priority is to figure out what this stack trace is
telling me.

Date/Time:       2012-02-03 10:35:57 -0500
OS Version:      10.6.8 (Build 10K549)
Architecture:    x86_64
Report Version:  7

Command:         R
Path:            /Applications/R64.app/Contents/MacOS/R
Version:         R 2.11.1 GUI 1.34 Leopard build 64-bit (5589)
Parent:          launchd [95]

PID:             37306
Event:           hang
Duration:        5.96s (sampling started after 2 seconds)
Steps:           19 (100ms sampling interval)

Pageins:         88
Pageouts:        0


Process:         R [37306]
Path:            /Applications/R64.app/Contents/MacOS/R
UID:             501

  Thread eef8d9     DispatchQueue 1
  User stack:
    19 start + 52 (in R) [0x100001a74]
      19 main + 844 (in R) [0x100001dec]
        19 -[REngine runREPL] + 102 (in R) [0x100010f86]
          19 run_REngineRmainloop + 192 (in R) [0x1000194a0]
            19 R_ReplDLLdo1 + 462 (in libR.dylib) [0x10016ce4e]
              19 Rf_eval + 1196 (in libR.dylib) [0x10013ca1c]
                19 do_for + 678 (in libR.dylib) [0x100140f66]
                  19 Rf_eval + 1196 (in libR.dylib) [0x10013ca1c]
                    19 do_begin + 308 (in libR.dylib) [0x100141724]
                      19 Rf_eval + 1196 (in libR.dylib) [0x10013ca1c]
                        19 Rf_eval + 1196 (in libR.dylib) [0x10013ca1c]
                          19 do_begin + 308 (in libR.dylib) [0x100141724]
                            19 Rf_eval + 1196 (in libR.dylib) [0x10013ca1c]
                              19 do_while + 614 (in libR.dylib)
[0x10013dca6]
                                19 Rf_eval + 1196 (in libR.dylib)
[0x10013ca1c]
                                  19 do_begin + 308 (in libR.dylib)
[0x100141724]
                                    19 Rf_eval + 1196 (in libR.dylib)
[0x10013ca1c]
                                      19 do_set + 709 (in libR.dylib)
[0x10013ea55]
                                        19 Rf_eval + 962 (in libR.dylib)
[0x10013c932]
                                          19 Rf_applyClosure + 724 (in
libR.dylib) [0x10013f364]
                                            19 Rf_eval + 1196 (in
libR.dylib) [0x10013ca1c]
                                              19 do_begin + 308 (in
libR.dylib) [0x100141724]
                                                19 Rf_eval + 1196 (in
libR.dylib) [0x10013ca1c]
                                                  19 do_set + 709 (in
libR.dylib) [0x10013ea55]
                                                    19 Rf_eval + 1676 (in
libR.dylib) [0x10013cbfc]
                                                      19 do_dotCode + 6074
(in libR.dylib) [0x100111e9a]
                                                        6 pa + 2960
(polio_3A.c:258 in polio_3A.so) [0x101707b70]
                                                        5 pa + 2989
(polio_3A.c:256 in polio_3A.so) [0x101707b8d]
                                                        2 pa + 2964
(polio_3A.c:258 in polio_3A.so) [0x101707b74]
                                                        2 pa + 2969
(polio_3A.c:259 in polio_3A.so) [0x101707b79]
                                                        1 pa + 2966
(polio_3A.c:258 in polio_3A.so) [0x101707b76]
                                                        1 pa + 1035
(polio_3A.c:144 in polio_3A.so) [0x1017073eb]
                                                          1 R_ProcessEvents
+ 30 (in libR.dylib) [0x10021dc1e]
                                                            1
Re_ProcessEvents + 29 (in R) [0x10000f46d]
                                                              1 gettimeofday
+ 43 (in libSystem.B.dylib) [0x7fff82a0814f]
                                                                1
__gettimeofday + 80 (in commpage [libSystem.B.dylib]) [0x7fffffe00330]
                                                        1 pa + 1262
(polio_3A.c:165 in polio_3A.so) [0x1017074ce]
                                                        1 pa + 2975
(polio_3A.c:260 in polio_3A.so) [0x101707b7f]


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