cppu/source/UnsafeBridge/UnsafeBridge.cxx

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  30
  31 // MARKER(update_precomp.py): autogen include statement, do not remove
  32 #include "precompiled_cppu.hxx"
  33
  34 #include "osl/mutex.hxx"
  35 #include "osl/thread.h"
  36
  37 #include "cppu/helper/purpenv/Environment.hxx"
  38 #include "cppu/helper/purpenv/Mapping.hxx"
  39
  40
  41 #ifdef debug
  42 # define LOG_LIFECYCLE_UnsafeBridge
  43 #endif
  44
  45 #ifdef LOG_LIFECYCLE_UnsafeBridge
  46 #  include <iostream>
  47 #  define LOG_LIFECYCLE_UnsafeBridge_emit(x) x
  48
  49 #else
  50 #  define LOG_LIFECYCLE_UnsafeBridge_emit(x)
  51
  52 #endif
  53
  54
  55 class SAL_DLLPRIVATE UnsafeBridge : public cppu::Enterable
  56 {
  57     osl::Mutex          m_mutex;
  58     sal_Int32           m_count;
  59     oslThreadIdentifier m_threadId;
  60
  61     virtual  ~UnsafeBridge(void);
  62
  63 public:
  64     explicit UnsafeBridge(void);
  65
  66     virtual void v_callInto_v(uno_EnvCallee * pCallee, va_list * pParam);
  67     virtual void v_callOut_v (uno_EnvCallee * pCallee, va_list * pParam);
  68
  69     virtual void v_enter(void);
  70     virtual void v_leave(void);
  71
  72     virtual int  v_isValid(rtl::OUString * pReason);
  73 };
  74
  75 UnsafeBridge::UnsafeBridge(void)
  76     : m_count   (0),
  77       m_threadId(0)
  78 {
  79     LOG_LIFECYCLE_UnsafeBridge_emit(fprintf(stderr, "LIFE: %s -> %p\n", "UnsafeBridge::UnsafeBridge(uno_Environment * pEnv)", this));
  80 }
  81
  82 UnsafeBridge::~UnsafeBridge(void)
  83 {
  84     LOG_LIFECYCLE_UnsafeBridge_emit(fprintf(stderr, "LIFE: %s -> %p\n", "UnsafeBridge::~UnsafeBridge(void)", this));
  85
  86     OSL_ASSERT(m_count >= 0);
  87 }
  88
  89 void UnsafeBridge::v_callInto_v(uno_EnvCallee * pCallee, va_list * pParam)
  90 {
  91     enter();
  92     pCallee(pParam);
  93     leave();
  94 }
  95
  96 void UnsafeBridge::v_callOut_v(uno_EnvCallee * pCallee, va_list * pParam)
  97 {
  98     OSL_ASSERT(m_count > 0);
  99
 100     -- m_count;
 101     pCallee(pParam);
 102     ++ m_count;
 103
 104     if (!m_threadId)
 105         m_threadId = osl_getThreadIdentifier(NULL);
 106 }
 107
 108 void UnsafeBridge::v_enter(void)
 109 {
 110     m_mutex.acquire();
 111
 112     OSL_ASSERT(m_count >= 0);
 113
 114     if (m_count == 0)
 115         m_threadId = osl_getThreadIdentifier(NULL);
 116
 117     ++ m_count;
 118 }
 119
 120 void UnsafeBridge::v_leave(void)
 121 {
 122     OSL_ASSERT(m_count > 0);
 123
 124     -- m_count;
 125     if (!m_count)
 126         m_threadId = 0;
 127
 128
 129     m_mutex.release();
 130 }
 131
 132 int UnsafeBridge::v_isValid(rtl::OUString * pReason)
 133 {
 134     int result = 1;
 135
 136     result = m_count > 0;
 137     if (!result)
 138         *pReason = rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("not entered"));
 139
 140     else
 141     {
 142         result = m_threadId == osl_getThreadIdentifier(NULL);
 143
 144         if (!result)
 145             *pReason = rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("wrong thread"));
 146     }
 147
 148     if (result)
 149         *pReason = rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("OK"));
 150
 151     return result;
 152 }
 153
 154 extern "C" void SAL_DLLPUBLIC_EXPORT SAL_CALL uno_initEnvironment(uno_Environment * pEnv)
 155     SAL_THROW_EXTERN_C()
 156 {
 157     cppu::helper::purpenv::Environment_initWithEnterable(pEnv, new UnsafeBridge());
 158 }
 159
 160 extern "C" void SAL_DLLPUBLIC_EXPORT SAL_CALL uno_ext_getMapping(uno_Mapping     ** ppMapping,
 161                                    uno_Environment  * pFrom,
 162                                    uno_Environment  * pTo )
 163 {
 164     cppu::helper::purpenv::createMapping(ppMapping, pFrom, pTo);
 165 }
 166