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| 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "net/base/dns_reload_timer.h" | 5 #include "net/base/dns_reload_timer.h" |
| 6 | 6 |
| 7 #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_OPENBSD) | 7 #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_OPENBSD) |
| 8 #include "base/lazy_instance.h" | 8 #include "base/lazy_instance.h" |
| 9 #include "base/thread_local_storage.h" | 9 #include "base/threading/thread_local_storage.h" |
| 10 #include "base/time.h" | 10 #include "base/time.h" |
| 11 | 11 |
| 12 namespace { | 12 namespace { |
| 13 | 13 |
| 14 // On Linux/BSD, changes to /etc/resolv.conf can go unnoticed thus resulting | 14 // On Linux/BSD, changes to /etc/resolv.conf can go unnoticed thus resulting |
| 15 // in DNS queries failing either because nameservers are unknown on startup | 15 // in DNS queries failing either because nameservers are unknown on startup |
| 16 // or because nameserver info has changed as a result of e.g. connecting to | 16 // or because nameserver info has changed as a result of e.g. connecting to |
| 17 // a new network. Some distributions patch glibc to stat /etc/resolv.conf | 17 // a new network. Some distributions patch glibc to stat /etc/resolv.conf |
| 18 // to try to automatically detect such changes but these patches are not | 18 // to try to automatically detect such changes but these patches are not |
| 19 // universal and even patched systems such as Jaunty appear to need calls | 19 // universal and even patched systems such as Jaunty appear to need calls |
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| 65 // multiple times. Initialize the ThreadLocalStorage slot only once. | 65 // multiple times. Initialize the ThreadLocalStorage slot only once. |
| 66 if (!tls_index_.initialized()) | 66 if (!tls_index_.initialized()) |
| 67 tls_index_.Initialize(SlotReturnFunction); | 67 tls_index_.Initialize(SlotReturnFunction); |
| 68 } | 68 } |
| 69 | 69 |
| 70 ~DnsReloadTimer() { | 70 ~DnsReloadTimer() { |
| 71 } | 71 } |
| 72 | 72 |
| 73 // We use thread local storage to identify which base::TimeTicks to | 73 // We use thread local storage to identify which base::TimeTicks to |
| 74 // interact with. | 74 // interact with. |
| 75 static ThreadLocalStorage::Slot tls_index_ ; | 75 static base::ThreadLocalStorage::Slot tls_index_ ; |
| 76 | 76 |
| 77 DISALLOW_COPY_AND_ASSIGN(DnsReloadTimer); | 77 DISALLOW_COPY_AND_ASSIGN(DnsReloadTimer); |
| 78 }; | 78 }; |
| 79 | 79 |
| 80 // A TLS slot to the TimeTicks for the current thread. | 80 // A TLS slot to the TimeTicks for the current thread. |
| 81 // static | 81 // static |
| 82 ThreadLocalStorage::Slot DnsReloadTimer::tls_index_(base::LINKER_INITIALIZED); | 82 base::ThreadLocalStorage::Slot DnsReloadTimer::tls_index_( |
| 83 base::LINKER_INITIALIZED); |
| 83 | 84 |
| 84 base::LazyInstance<DnsReloadTimer, | 85 base::LazyInstance<DnsReloadTimer, |
| 85 base::LeakyLazyInstanceTraits<DnsReloadTimer> > | 86 base::LeakyLazyInstanceTraits<DnsReloadTimer> > |
| 86 g_dns_reload_timer(base::LINKER_INITIALIZED); | 87 g_dns_reload_timer(base::LINKER_INITIALIZED); |
| 87 | 88 |
| 88 } // namespace | 89 } // namespace |
| 89 | 90 |
| 90 namespace net { | 91 namespace net { |
| 91 | 92 |
| 92 bool DnsReloadTimerHasExpired() { | 93 bool DnsReloadTimerHasExpired() { |
| 93 DnsReloadTimer* dns_timer = g_dns_reload_timer.Pointer(); | 94 DnsReloadTimer* dns_timer = g_dns_reload_timer.Pointer(); |
| 94 return dns_timer->Expired(); | 95 return dns_timer->Expired(); |
| 95 } | 96 } |
| 96 | 97 |
| 97 } // namespace net | 98 } // namespace net |
| 98 | 99 |
| 99 #endif // defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_OPENBSD) | 100 #endif // defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_OPENBSD) |
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