Warnings when compiling Boost libraries in C++ Builder -

-

i getting warnings when trying include <boost/thread.hpp> in c++ builder. every unit including it, c++ builder shows these 2 lines:

thread_heap_alloc.hpp(59): w8128 can't import function being defined thread_heap_alloc.hpp(69): w8128 can't import function being defined

already tried things, nothing worked though.

it compiles correctly, however, it's getting on nerves. why message being shown?

the lines are:

#include <boost/config/abi_prefix.hpp>  namespace boost {     namespace detail     {         inline boost_thread_decl void* allocate_raw_heap_memory(unsigned size)         {              void* const eap_memory=detail::win32::heapalloc(detail::win32::getprocessheap(),0,size);             if(!heap_memory)             {                 throw std::bad_alloc();             }         return heap_memory;     }      inline boost_thread_decl void free_raw_heap_memory(void* heap_memory)     {         boost_verify(detail::win32::heapfree(detail::win32::getprocessheap(),0,heap_memory)!=0);     }

where 59 { below boost_thread_decl, 69. looks boost_thread_decl not defined or mis-defined, trying follow through boost code not easy.

this boost 1.39.

add #define boost_thread_use_lib before including thread.hpp.

this tested:

#define boost_thread_use_lib extern "c" {    namespace boost    {       void tss_cleanup_implemented( void )       {          /*          function's sole purpose cause link error in cases          automatic tss cleanup not implemented boost.threads          reminder user code responsible calling necessary          functions @ appropriate times (and implementing          tss_cleanup_implemented() function eliminate linker's          missing symbol error).           if boost.threads later implements automatic tss cleanup in cases          doesn't (which plan), duplicate          symbol error warn user custom solution no          longer needed , can removed.*/       }    } } #include <boost/thread.hpp>

then set 'link dynamic rtl' , 'link runtime packages'.

this clean build , starts thread properly.

i've written blog entry this: http://blog.marionette.ca/cross-platform-threading-for-c-builder-using-boostthread/


Comments

Post a Comment

Popular posts from this blog

java - Jmockit String final length method mocking Issue -

-
using jmockit 1.2 jar, trying mock string's length method getting unexpected invocation exception: failed: test java.lang.illegalstateexception: missing invocation mocked type @ point; please make sure such invocations appear after declaration of suitable mock field or parameter @ stringdemo.testa$1.<init>(testa.java:17) @ stringdemo.testa.test(testa.java:13) i using testng: @test public void test() throws exception { new expectations() { @mocked("length") string astring; { astring.length(); result = 2; } }; system.out.println(a.showa("test")); } } actual class a: public class { public static int showa(string str){ int a= str.length(); return a; } } this wrong way of recording expected results. shouldn't mock , record string's length() method, record showa() instead. here solution @suppresswarnings("unused...
Read more

What is the difference between data design and data model(ERD) -

-
i have google question , find answer in day. know, data design many many table have list column,and mark pk , fk. why er-diagram have find this? data design process of designing database. main output of data design detailed logical data model of database. some people data design includes of needed logical , physical design choices , physical storage parameters needed generate design in data definition language. technically, database analysis, database analysts (dbas) trained do. while person can both data design , database analysis, these 2 different tasks. data design models data. database analysis takes model , applies 1 or more database engines (relational, hierarchical, nosql). a logical data model 1 of main outputs of data design. data model represented entity relationship diagram, or er diagram.
Read more

ios - Can NSManagedObject conform to NSCoding -

-
i need transfer single object across device. right converting nsmanagedobject dictionary , archiving , sending nsdata. upon receiving unarchiving it. transfer nsmanagedobject archiving , unarchiving instead of creating intermediate data object. @interface test : nsmanagedobject<nscoding> @property (nonatomic, retain) nsstring * title; @end @implementation test @dynamic title; - (id)initwithcoder:(nscoder *)coder { self = [super init]; if (self) { self.title = [coder decodeobjectforkey:@"title"]; //<crash } return self; } - (void)encodewithcoder:(nscoder *)coder { [coder encodeobject:self.title forkey:@"title"]; } @end nsdata *archivedobjects = [nskeyedarchiver archiveddatawithrootobject:testobj]; nsdata *objectsdata = archivedobjects; if ([objectsdata length] > 0) { nsarray *objects = [nskeyedunarchiver unarchiveobjectwithdata:objectsdata]; } the problem above code is. crashes @ self.title in initwithcoder sa...
Read more