| Incredible interaction between graphics and DLM: SOS! [message #61879] |
Tue, 05 August 2008 08:27 |
fabio.tosetti
Messages: 2
Registered: August 2008
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Junior Member |
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I have a very simple file set (see below), with only one function,
idl_test(), written just to isolate the problem.
The following instruction simply sleep for 20 seconds and correctly
returns:
IDL> print, idl_test()
The following sequence cause the idl_test() to return BEFORE the
expected time:
IDL> err = dialog_message("A dialog")
IDL> print, idl_test()
The idl_test() returns after about 3-4 seconds.
The same happens if I plot a graphic before calling idl_test().
Of course in my application I don't want to sleep(), but to call some
Python code that do remote communication (Pyro), but the result is
exactly the same, and it's very frustrating :-(...
THE EXAMPLE FILES ARE:
1) idl_test.dlm:
MODULE idl_test
DESCRIPTION idl test library
VERSION 1.0
SOURCE LB
BUILD_DATE AUG 05 2008
FUNCTION IDL_TEST 0 0
2) idl_test.h:
#ifndef IDL_TEST_H_INCLUDE
#define IDL_TEST_H_INCLUDE
extern "C"{
int IDL_Load(void);
}
#endif /*IDL_TEST_H_INCLUDE*/
2) idl_test.cpp file:
#include "idl_test.h"
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
extern "C"{
#include "idl_export.h"
}
IDL_VPTR idl_test(int lArgc, IDL_VPTR Argv[]) {
// TEST
int sec = 20;
printf("Sleeping for %d seconds... will timeout earlier!\n", sec);
sleep(sec);
return IDL_StrToSTRING("idl_test returned before 20 seconds!!!");
}
int IDL_Load(void) {
// These tables contain information on the functions and procedures
// that make up the TESTMODULE DLM. The information contained in
these
// tables must be identical to that contained in testmodule.dlm.
//
static IDL_SYSFUN_DEF2 function_addr[] = {
{ {(IDL_SYSRTN_GENERIC) idl_test}, "IDL_TEST", 0, 0, 0, 0},
};
// Register my routines: the routines must be specified exactly
the same
// as in .dlm.
return IDL_SysRtnAdd(function_addr, TRUE,
IDL_CARRAY_ELTS(function_addr));
}
4) Makefile:
all: idl_test.so
# ITT had the great idea of changing the name of
# the installation directory since idl6.3
# So if you have idl < 6.4 use
#IDLDIR = /usr/local/rsi/idl/external/include
# else use
IDLDIR = /usr/local/itt/idl/external/include
CPPFLAGS = -Wall -W -Wreturn-type -Wunused -D_GNU_SOURCE
MORE_INCLUDE = -I$(IDLDIR) -I/usr/include/python
%.o:%.h
.cpp.o:
g++ $(CPPFLAGS) $(MORE_INCLUDE) -c $< -o $@
idl_test.so: idl_test.o $(IDLDIR)/idl_export.h
g++ $(CPPFLAGS) -shared -o idl_test.so idl_test.o -lstdc++
clean:
rm -f *.o *.so
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