dad1e7b3e9
I'm using ltdl even it considers my DLLs to NOT be a libtool archive, and this is making the symbol name transformation mess up. If I do it myself, I can avoid this.
110 lines
2.3 KiB
C++
110 lines
2.3 KiB
C++
#include <stdio.h>
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#include <stdlib.h>
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#define LT_SCOPE extern /* so that ltdl.h does not export anything */
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#include <ltdl.h>
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#define MAIN_DLL_EXPORT
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#include "main.h"
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const char *version_string = "uselib-test6-1.0";
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int register_module (const char *name)
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{
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printf ("register_module was called by module '%s'\n", name);
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return 0;
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}
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int load_module (const char *fmt, const char *modname)
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{
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char buf[512];
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sprintf (buf, fmt, modname);
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printf ("loading module from VARIES{%s}\n", buf);
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lt_dlhandle handle = lt_dlopenext (buf);
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printf ("handle is VARIES{%p}\n", handle);
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if (!handle) {
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printf ("lt_dlopen error: %s\n", lt_dlerror ());
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return -1;
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}
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char sym[1024];
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sprintf (sym, "%s_LTX_%s", modname, "module_init");
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modload_func func = (modload_func) lt_dlsym (handle, sym);
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printf ("module_init function is at VARIES{%p}\n", func);
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if (func != NULL) {
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printf ("Calling module_init\n");
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(*func)();
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} else {
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printf ("lt_dlsym error: %s\n", lt_dlerror ());
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return -1;
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}
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return 0;
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}
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Widget* widgets[10];
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void init_widgets ()
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{
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widgets[0] = new Widget (1, "Fred", 1.01);
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widgets[1] = new Widget (2, "Erma", 0.76);
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widgets[2] = new Widget (3, "Mikhail", 2.25);
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}
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int main (int argc, char **argv)
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{
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printf ("start\n");
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init_widgets ();
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if (lt_dlinit () != 0) {
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printf ("lt_dlinit error: %s\n", lt_dlerror ());
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return -1;
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}
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#ifdef WIN32
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const char *module_name_format = "%s";
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#else
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const char *module_name_format = "lib%s.la";
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#endif
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printf ("loading module1\n");
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// try to load module1
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if (load_module (module_name_format, "module1") < 0) {
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printf ("load module1 failed\n");
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}
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if (load_module (module_name_format, "module2") < 0) {
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printf ("load module2 failed\n");
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}
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int arg;
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for (int arg=1; arg < argc; arg++) {
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if (load_module (module_name_format, argv[arg]) < 0) {
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printf ("load %s failed\n", argv[arg]);
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}
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}
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printf ("stop\n");
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exit (77);
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}
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///// Widget class implementation
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Widget::Widget(int id, const char* name, float weight)
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{
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this->id = id;
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this->name = name;
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this->weight = weight;
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}
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int Widget::getId ()
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{
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return id;
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}
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const char* Widget::getName ()
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{
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return name;
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}
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float Widget::getWeight ()
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{
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return weight;
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}
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void Widget::print (FILE* fp)
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{
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fprintf (fp, "[Widget id=%d, name='%s', weight=%.4f]", id, name, weight);
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}
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