49 lines
1.0 KiB
C++
49 lines
1.0 KiB
C++
#pragma once
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#include <stdint.h>
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#include <zcall.h>
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class Channel {
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public:
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Channel() {}
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void adopt_cap(uint64_t id);
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uint64_t release_cap();
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uint64_t cap();
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z_err_t WriteStr(const char* msg);
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z_err_t ReadStr(char* buffer, uint64_t* size);
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template <typename T>
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z_err_t WriteStruct(T*);
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template <typename T>
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z_err_t ReadStructAndCap(T*, uint64_t*);
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// FIXME: Close channel here.
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~Channel() {}
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private:
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uint64_t chan_cap_ = 0;
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};
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uint64_t CreateChannels(Channel& c1, Channel& c2);
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template <typename T>
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z_err_t Channel::WriteStruct(T* obj) {
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return ZChannelSend(chan_cap_, sizeof(T), obj, 0, nullptr);
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}
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template <typename T>
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z_err_t Channel::ReadStructAndCap(T* obj, uint64_t* cap) {
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uint64_t num_bytes, num_caps;
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uint64_t ret = ZChannelRecv(chan_cap_, sizeof(T), obj, /* num_caps= */ 1, cap,
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&num_bytes, &num_caps);
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if (ret != Z_OK) {
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return ret;
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}
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if (num_caps != 1 || num_bytes != sizeof(T)) {
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return Z_ERR_INVALID;
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}
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return Z_OK;
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}
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