On 6 September 2012 at 21:24, Jiqiang Guo wrote:
| Dear List,
|
| In the middle of figure out another problem, I used function Module twice, but
| then I got segfault. Is there any solution for this? For the time being, I
| really need to call function Module more than once.
a) I simply never combine Rcpp modules with inline. With a package, things work.
b) In
m <- Module("foo1", getDynLib(fx))
m2 <- Module("foo1", getDynLib(fx))
are you by chance mistaking Module() [ ie the declaration ] with new() [
ie the instantiation of an object ] ?
Dirk
| Best,
| Jiqiang
|
| P.S. an example code and the dump of output.
| In addition, my sessionInfo()
|
| > sessionInfo()
| R version 2.15.1 (2012-06-22)
| Platform: x86_64-pc-linux-gnu (64-bit)
|
| locale:
| [1] LC_CTYPE=en_US.utf8 LC_NUMERIC=C
| [3] LC_TIME=en_US.utf8 LC_COLLATE=en_US.utf8
| [5] LC_MONETARY=en_US.utf8 LC_MESSAGES=en_US.utf8
| [7] LC_PAPER=C LC_NAME=C
| [9] LC_ADDRESS=C LC_TELEPHONE=C
| [11] LC_MEASUREMENT=en_US.utf8 LC_IDENTIFICATION=C
|
| attached base packages:
| [1] stats graphics grDevices utils datasets methods base
|
|
| other attached packages:
| [1] inline_0.3.8 Rcpp_0.9.13
|
| loaded via a namespace (and not attached):
| [1] tools_2.15.1
|
|
| require("Rcpp")
| require("inline")
|
| inc <- '
| class Foo {
| private:
| int x_;
| public:
| Foo(int x) : x_(x) { }
| void setx(int x) { x_ = x;}
| int getx() const { return x_;}
| };
|
| RCPP_MODULE(foo1) {
| class_<Foo>("Foo")
| .constructor<int>()
| .method("setx", &Foo::setx)
| .method("getx", &Foo::getx)
| ;
| }
| '
| fx <- cxxfunction(signature(), "", include = inc, plugin = "Rcpp", verbose = !
| TRUE)
| m <- Module("foo1", getDynLib(fx))
| m2 <- Module("foo1", getDynLib(fx))
|
| ======
|
| > m <- Module("foo1", getDynLib(fx))
| > m2 <- Module("foo1", getDynLib(fx))
| >
| > f <- new(m$Foo, 1)
| > f2 <- new(m2$Foo, 1)
|
| *** caught segfault ***
| address 0x90, cause 'memory not mapped'
|
| Traceback:
| 1: .Call(symbol)
| 2: Module(module, mustStart = TRUE)
| 3: .getModulePointer(x)
| 4: m2$Foo
| 5: .getClassFromCache(Class, where)
| 6: getClass(Class, where = topenv(parent.frame()))
| 7: new(m2$Foo, 1)
| aborting ...
|
|
|
| ----------------------------------------------------------------------
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--
Dirk Eddelbuettel | e...@debian.org | http://dirk.eddelbuettel.com
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