src/kits/package/solver/Solver.cpp

   1 /*
   2  * Copyright 2013, Haiku, Inc. All Rights Reserved.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Ingo Weinhold <ingo_weinhold@gmx.de>
   7  */
   8
   9
  10 #include <package/solver/Solver.h>
  11
  12
  13 typedef BPackageKit::BSolver* CreateSolverFunction();
  14
  15
  16 #include <dlfcn.h>
  17 #include <pthread.h>
  18
  19
  20 static CreateSolverFunction* sCreateSolver = NULL;
  21
  22 static pthread_once_t sLoadLibsolvSolverAddOnInitOnce = PTHREAD_ONCE_INIT;
  23
  24
  25 static void
  26 load_libsolv_solver_add_on()
  27 {
  28         int flags = 0;
  29 #ifdef HAIKU_TARGET_PLATFORM_HAIKU
  30         void* imageHandle = dlopen("libpackage-add-on-libsolv.so", flags);
  31 #else
  32 #ifdef HAIKU_HOST_PLATFORM_LINUX
  33         flags = RTLD_LAZY | RTLD_LOCAL;
  34 #endif
  35         void* imageHandle = dlopen("libpackage-add-on-libsolv_build.so", flags);
  36 #endif
  37         if (imageHandle == NULL)
  38                 return;
  39
  40         sCreateSolver = (CreateSolverFunction*)dlsym(imageHandle, "create_solver");
  41         if (sCreateSolver == NULL)
  42                 dlclose(imageHandle);
  43 }
  44
  45
  46 namespace BPackageKit {
  47
  48
  49 BSolver::BSolver()
  50 {
  51 }
  52
  53
  54 BSolver::~BSolver()
  55 {
  56 }
  57
  58
  59 /*static*/ status_t
  60 BSolver::Create(BSolver*& _solver)
  61 {
  62         pthread_once(&sLoadLibsolvSolverAddOnInitOnce, &load_libsolv_solver_add_on);
  63         if (sCreateSolver == NULL)
  64                 return B_NOT_SUPPORTED;
  65
  66         BSolver* solver = sCreateSolver();
  67         if (solver == NULL)
  68                 return B_NO_MEMORY;
  69
  70         status_t error = solver->Init();
  71         if (error != B_OK) {
  72                 delete solver;
  73                 return error;
  74         }
  75
  76         _solver = solver;
  77         return B_OK;
  78 }
  79
  80
  81 }       // namespace BPackageKit