cppu/source/UnsafeBridge/UnsafeBridge.cxx

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  27
  28 // MARKER(update_precomp.py): autogen include statement, do not remove
  29 #include "precompiled_cppu.hxx"
  30
  31 #include "osl/mutex.hxx"
  32 #include "osl/thread.h"
  33
  34 #include "cppu/helper/purpenv/Environment.hxx"
  35 #include "cppu/helper/purpenv/Mapping.hxx"
  36
  37
  38 #ifdef debug
  39 # define LOG_LIFECYCLE_UnsafeBridge
  40 #endif
  41
  42 #ifdef LOG_LIFECYCLE_UnsafeBridge
  43 #  include <iostream>
  44 #  define LOG_LIFECYCLE_UnsafeBridge_emit(x) x
  45
  46 #else
  47 #  define LOG_LIFECYCLE_UnsafeBridge_emit(x)
  48
  49 #endif
  50
  51
  52 class SAL_DLLPRIVATE UnsafeBridge : public cppu::Enterable
  53 {
  54     osl::Mutex          m_mutex;
  55     sal_Int32           m_count;
  56     oslThreadIdentifier m_threadId;
  57
  58     virtual  ~UnsafeBridge(void);
  59
  60 public:
  61     explicit UnsafeBridge(void);
  62
  63     virtual void v_callInto_v(uno_EnvCallee * pCallee, va_list * pParam);
  64     virtual void v_callOut_v (uno_EnvCallee * pCallee, va_list * pParam);
  65
  66     virtual void v_enter(void);
  67     virtual void v_leave(void);
  68
  69     virtual int  v_isValid(rtl::OUString * pReason);
  70 };
  71
  72 UnsafeBridge::UnsafeBridge(void)
  73     : m_count   (0),
  74       m_threadId(0)
  75 {
  76     LOG_LIFECYCLE_UnsafeBridge_emit(fprintf(stderr, "LIFE: %s -> %p\n", "UnsafeBridge::UnsafeBridge(uno_Environment * pEnv)", this));
  77 }
  78
  79 UnsafeBridge::~UnsafeBridge(void)
  80 {
  81     LOG_LIFECYCLE_UnsafeBridge_emit(fprintf(stderr, "LIFE: %s -> %p\n", "UnsafeBridge::~UnsafeBridge(void)", this));
  82
  83     OSL_ASSERT(m_count >= 0);
  84 }
  85
  86 void UnsafeBridge::v_callInto_v(uno_EnvCallee * pCallee, va_list * pParam)
  87 {
  88     enter();
  89     pCallee(pParam);
  90     leave();
  91 }
  92
  93 void UnsafeBridge::v_callOut_v(uno_EnvCallee * pCallee, va_list * pParam)
  94 {
  95     OSL_ASSERT(m_count > 0);
  96
  97     -- m_count;
  98     pCallee(pParam);
  99     ++ m_count;
 100
 101     if (!m_threadId)
 102         m_threadId = osl_getThreadIdentifier(NULL);
 103 }
 104
 105 void UnsafeBridge::v_enter(void)
 106 {
 107     m_mutex.acquire();
 108
 109     OSL_ASSERT(m_count >= 0);
 110
 111     if (m_count == 0)
 112         m_threadId = osl_getThreadIdentifier(NULL);
 113
 114     ++ m_count;
 115 }
 116
 117 void UnsafeBridge::v_leave(void)
 118 {
 119     OSL_ASSERT(m_count > 0);
 120
 121     -- m_count;
 122     if (!m_count)
 123         m_threadId = 0;
 124
 125
 126     m_mutex.release();
 127 }
 128
 129 int UnsafeBridge::v_isValid(rtl::OUString * pReason)
 130 {
 131     int result = 1;
 132
 133     result = m_count > 0;
 134     if (!result)
 135         *pReason = rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("not entered"));
 136
 137     else
 138     {
 139         result = m_threadId == osl_getThreadIdentifier(NULL);
 140
 141         if (!result)
 142             *pReason = rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("wrong thread"));
 143     }
 144
 145     if (result)
 146         *pReason = rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("OK"));
 147
 148     return result;
 149 }
 150
 151 extern "C" void SAL_DLLPUBLIC_EXPORT SAL_CALL uno_initEnvironment(uno_Environment * pEnv)
 152     SAL_THROW_EXTERN_C()
 153 {
 154     cppu::helper::purpenv::Environment_initWithEnterable(pEnv, new UnsafeBridge());
 155 }
 156
 157 extern "C" void SAL_DLLPUBLIC_EXPORT SAL_CALL uno_ext_getMapping(uno_Mapping     ** ppMapping,
 158                                    uno_Environment  * pFrom,
 159                                    uno_Environment  * pTo )
 160 {
 161     cppu::helper::purpenv::createMapping(ppMapping, pFrom, pTo);
 162 }
 163