DLOPEN_PREFLIGHT(3) BSD Library Functions Manual DLOPEN_PREFLIGHT(3)NAME
dlopen_preflight -- preflight the load of a dynamic library or bundle
SYNOPSIS
#include <dlfcn.h>
bool
dlopen_preflight(const char* path);
DESCRIPTION
dlopen_preflight() examines the mach-o file specified by path. It checks if the file and libraries it depends on are all compatible with the
current process. That is, they contain the correct architecture and are not otherwise ABI incompatible.
dlopen_preflight() was first available in Mac OS X 10.5.
SEARCHING
dlopen_preflight() uses the same steps as dlopen() to find a compatible mach-o file.
RETURN VALUES
dlopen_preflight() returns true on if the mach-o file is compatible. If the file is not compatible, it returns false and sets an error
string that can be examined with dlerror().
SEE ALSO dlopen(3)dlerror(3)BSD April 17, 2006 BSD
Check Out this Related Man Page
DLCLOSE(3) BSD Library Functions Manual DLCLOSE(3)NAME
dlclose -- close a dynamic library or bundle
SYNOPSIS
#include <dlfcn.h>
int
dlclose(void* handle);
DESCRIPTION
dlclose() releases a reference to the dynamic library or bundle referenced by handle. If the reference count drops to 0, the bundle is
removed from the address space, and handle is rendered invalid. Just before removing a dynamic library or bundle in this way, any termina-
tion routines in it are called. handle is the value returned by a previous call to dlopen.
Prior to Mac OS X 10.5, only bundles could be unloaded. Starting in Mac OS X 10.5, dynamic libraries may also be unloaded. There are a cou-
ple of cases in which a dynamic library will never be unloaded: 1) the main executable links against it, 2) An API that does not supoort
unloading (e.g. NSAddImage()) was used to load it or some other dynnamic library that depends on it, 3) the dynamic library is in dyld's
shared cache.
RETURN VALUES
If dlclose() is successful, it returns a value of 0. Otherwise it returns -1, and sets an error string that can be retrived with dlerror().
SEE ALSO dlopen(3)dlsym(3)dlerror(3)dyld(3)ld(1)cc(1)
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