tools/npapi_runtime/npcapability.h

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  31
  32
  33 // NaCl-NPAPI Interface
  34
  35 #ifndef NATIVE_CLIENT_TOOLS_NPAPI_RUNTIME_NPCAPABILITY_H_
  36 #define NATIVE_CLIENT_TOOLS_NPAPI_RUNTIME_NPCAPABILITY_H_
  37
  38 #include "native_client/tools/npapi_runtime/nacl_npapi.h"
  39
  40 namespace nacl {
  41
  42 struct NPCapability {
  43   // If an NPCapability represents a NaCl resource handle rather than an
  44   // NPObject, the pid field is set to kHandle.
  45   static const int kHandle = -1;
  46
  47   int pid;           // The process ID that has the object.
  48   NPObject* object;  // The pointer to the object in the owner process.
  49
  50   // Copies the specified capability value to this capability.
  51   NPCapability& CopyFrom(const NPCapability& capability) {
  52     pid = capability.pid;
  53     object = capability.object;
  54     return *this;
  55   }
  56
  57   // Returns true if this capability represents a NaCl resource handle.
  58   bool IsHandle() const {
  59     return (pid == kHandle) ? true : false;
  60   }
  61 };
  62
  63 // Less (<) is required for the std::map template class.
  64 inline bool operator<(const NPCapability& c1, const NPCapability& c2) {
  65   if (c1.pid < c2.pid) {
  66     return true;
  67   }
  68   if (c2.pid < c1.pid) {
  69     return false;
  70   }
  71   if (c1.object < c2.object) {
  72     return true;
  73   }
  74   return false;
  75 }
  76
  77 inline bool operator==(const NPCapability& c1, const NPCapability& c2) {
  78   return (c1.pid == c2.pid && c1.object == c2.object) ? true : false;
  79 }
  80
  81 }  // namespace nacl
  82
  83 #endif  // NATIVE_CLIENT_TOOLS_NPAPI_RUNTIME_NPCAPABILITY_H_