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Make logging cost free when there is no output target (#12247)

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The logging streams now do almost no work when there is no output target for them.

For example, if LL_VERBOSE has no output targets, then `verbosestream << x` will return a StreamProxy with a null target. Any further `<<` operations applied to it will do nothing.
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paradust7 2022-05-04 11:55:01 -07:00 • committed by GitHub
parent ae7664597e
commit 0704ca0550
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14 changed files with 336 additions and 192 deletions
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src/network/address.h
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@ -59,7 +59,7 @@ public:
int getFamily() const { return m_addr_family; }
bool isIPv6() const { return m_addr_family == AF_INET6; }
bool isZero() const;
void print(std::ostream *s) const;
void print(std::ostream &s) const;
std::string serializeString() const;
bool isLocalhost() const;