Merge #19399: refactor: Replace RecursiveMutex with Mutex in rpc/server.cpp

6fdfeebcc79df62c8bf1cf4b6e9e97d6aefb3eb3 refactor: Replace RecursiveMutex with Mutex in rpc/server.cpp (Hennadii Stepanov)

Pull request description:

  The functions that could lock this mutex, i.e., `SetRPCWarmupStatus()`, `SetRPCWarmupFinished()`, `RPCIsInWarmup()`, `CRPCTable::execute()`, do not call itself recursively, and do not call each other either directly or indirectly. Therefore, the `g_rpc_warmup_mutex` could be a non-recursive mutex.

  Related to #19303.

ACKs for top commit:
  laanwj:
    ACK 6fdfeebcc79df62c8bf1cf4b6e9e97d6aefb3eb3
  MarcoFalke:
    ACK 6fdfeebcc79df62c8bf1cf4b6e9e97d6aefb3eb3

Tree-SHA512: 05a8ac58c0cd6a3c9afad9e06ad78059642e3e97715e129f379c0bf6dccdb58e70d05d965f23e7432fd3f02d7f97967a778ffb8e424837891d9d785a9e98964c
This commit is contained in:
Wladimir J. van der Laan 2020-06-29 19:03:18 +02:00 committed by PastaPastaPasta
parent dd2558b74a
commit 9feb82056c

View File

@ -20,10 +20,10 @@
#include <memory> // for unique_ptr
#include <unordered_map>
static RecursiveMutex cs_rpcWarmup;
static Mutex g_rpc_warmup_mutex;
static std::atomic<bool> g_rpc_running{false};
static bool fRPCInWarmup GUARDED_BY(cs_rpcWarmup) = true;
static std::string rpcWarmupStatus GUARDED_BY(cs_rpcWarmup) = "RPC server started";
static bool fRPCInWarmup GUARDED_BY(g_rpc_warmup_mutex) = true;
static std::string rpcWarmupStatus GUARDED_BY(g_rpc_warmup_mutex) = "RPC server started";
/* Timer-creating functions */
static RPCTimerInterface* timerInterface = nullptr;
/* Map of name to timer. */
@ -346,20 +346,20 @@ void RpcInterruptionPoint()
void SetRPCWarmupStatus(const std::string& newStatus)
{
LOCK(cs_rpcWarmup);
LOCK(g_rpc_warmup_mutex);
rpcWarmupStatus = newStatus;
}
void SetRPCWarmupFinished()
{
LOCK(cs_rpcWarmup);
LOCK(g_rpc_warmup_mutex);
assert(fRPCInWarmup);
fRPCInWarmup = false;
}
bool RPCIsInWarmup(std::string *outStatus)
{
LOCK(cs_rpcWarmup);
LOCK(g_rpc_warmup_mutex);
if (outStatus)
*outStatus = rpcWarmupStatus;
return fRPCInWarmup;
@ -457,7 +457,7 @@ UniValue CRPCTable::execute(const JSONRPCRequest &request) const
{
// Return immediately if in warmup
{
LOCK(cs_rpcWarmup);
LOCK(g_rpc_warmup_mutex);
if (fRPCInWarmup)
throw JSONRPCError(RPC_IN_WARMUP, rpcWarmupStatus);
}