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Code comments and consistency improvements. (#12)

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This commit is contained in:
Ravin Perera
2019-10-09 22:26:08 +05:30
committed by GitHub
parent e8663f24a0
commit 374424f98f
28 changed files with 1510 additions and 1881 deletions
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27
src/proc.cpp
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@@ -7,11 +7,11 @@
#include <rapidjson/document.h>
#include <rapidjson/stringbuffer.h>
#include <rapidjson/writer.h>
#include "proc.h"
#include "conf.h"
#include "proc.hpp"
#include "conf.hpp"
using namespace std;
using namespace shared;
using namespace util;
namespace proc
{
@@ -22,7 +22,6 @@ namespace proc
int contract_pid;
int write_to_stdin(ContractExecArgs &args);
bool is_contract_running();
int exec_contract(ContractExecArgs &args)
{
@@ -35,19 +34,19 @@ int exec_contract(ContractExecArgs &args)
int pid = fork();
if (pid > 0)
{
//HotPocket process.
// HotPocket process.
contract_pid = pid;
}
else if (pid == 0)
{
//Contract process.
//Set up the process environment and overlay the contract binary program with execv().
// Contract process.
// Set up the process environment and overlay the contract binary program with execv().
//Set the contract process working directory.
// Set the contract process working directory.
chdir(conf::ctx.contractDir.data());
//Write the contract input message from HotPocket to the stdin (0) of the contract process.
// Write the contract input message from HotPocket to the stdin (0) of the contract process.
write_to_stdin(args);
char *execv_args[] = {conf::cfg.binary.data(), conf::cfg.binargs.data(), NULL};
@@ -76,6 +75,8 @@ int exec_contract(ContractExecArgs &args)
*/
int write_to_stdin(ContractExecArgs &args)
{
//Populate the json document with contract args.
Document d;
d.SetObject();
Document::AllocatorType &allocator = d.GetAllocator();
@@ -107,13 +108,16 @@ int write_to_stdin(ContractExecArgs &args)
Value unl(kArrayType);
for (string &node : conf::cfg.unl)
unl.PushBack(StringRef(node.data()), allocator);
d.AddMember("unl", unl, allocator);
d.AddMember("unl", unl, allocator);
StringBuffer buffer;
Writer<StringBuffer> writer(buffer);
d.Accept(writer);
// Get the json string that should be written to contract input pipe.
const char *json = buffer.GetString();
// Establish contract input pipe.
int stdinpipe[2];
if (pipe(stdinpipe) != 0)
{
@@ -121,9 +125,12 @@ int write_to_stdin(ContractExecArgs &args)
return -1;
}
// Redirect pipe read-end to the contract std input so the
// contract process can read from our pipe.
dup2(stdinpipe[0], STDIN_FILENO);
close(stdinpipe[0]);
// Write the json message and close write fd.
write(stdinpipe[1], json, buffer.GetSize());
close(stdinpipe[1]);