问题：eclipsephp打开某个workspace时hang住，不能打开eclipse. 能成功打开其他workspace.
解决方法：
1. 查看log. 进入该workspace文件夹->.metadata->.log
!ENTRY org.eclipse.core.resources 2 10035 2018-05-05 15:00:29.044 10 !MESSAGE The workspace exited with unsaved changes in the previous session; refreshing workspace to recover changes. !ENTRY org.eclipse.osgi 2 0 2018-05-05 15:00:46.350 16 !MESSAGE While loading class "org.eclipse.egit.core.Activator", thread "Thread[Worker-4,5,main]" timed out waiting (5011ms) for thread "Thread[main,6,main]" to finish starting bundle "org.eclipse.egit.core_4.4.1.20160715045 5-r [116]". To avoid deadlock, thread "Thread[Worker-4,5,main]" is proceeding but "org.eclipse.egit.core.Activator" may not be fully initialized. 17 !STACK 0 18 org.osgi.framework.BundleException: Unable to acquire the state change lock for the module: osgi.identity; type="osgi.bundle"; version:Version="4.4.1.201607150455-r"; osgi.identity="org.eclipse.egit.core"; singleton:="true" [id=116] STARTED [STARTED] 19 at org.eclipse.osgi.container.Module.lockStateChange(Module.java:337) 20 at org.eclipse.osgi.container.Module.start(Module.java:401) 21 at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:470) 22 at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107) 23 at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClass(ClasspathManager.java:529) 24 at org.eclipse.osgi.internal.loader.ModuleClassLoader.findLocalClass(ModuleClassLoader.java:325) 25 at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:345) 26 at org.eclipse.osgi.internal.loader.sources.SingleSourcePackage.loadClass(SingleSourcePackage.java:36) 27 at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:407) 28 at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:372) 29 at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:364) 30 at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:161) 31 at java.lang.ClassLoader.loadClass(ClassLoader.java:357) 32 at org.eclipse.egit.ui.Activator$RepositoryChangeScanner.run(Activator.java:617) 33 at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) 34 Caused by: java.util.concurrent.TimeoutException: Timeout after waiting 5 seconds to acquire the lock. 35 at org.eclipse.osgi.container.Module.lockStateChange(Module.java:334) 36 ... 14 more 37 Root exception: 38 java.util.concurrent.TimeoutException: Timeout after waiting 5 seconds to acquire the lock. 39 at org.eclipse.osgi.container.Module.lockStateChange(Module.java:334) 40 at org.eclipse.osgi.container.Module.start(Module.java:401) 41 at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:470) 42 at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107) 43 at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClass(ClasspathManager.java:529) 44 at org.eclipse.osgi.internal.loader.ModuleClassLoader.findLocalClass(ModuleClassLoader.java:325) 45 at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:345) 46 at org.eclipse.osgi.internal.loader.sources.SingleSourcePackage.loadClass(SingleSourcePackage.java:36) 47 at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:407) 48 at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:372) 49 at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:364) 50 at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:161) 51 at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
从日志中看应该是该workspace上次退出时有没有保存的改动；试图刷新workspace来恢复这些changes.然后在恢复时出现了死锁的问题。所以解决办法应该时解决死锁。
2. google the solution.
2.1 删除.metadata->.lock文件，重试仍然不成功。
2.2 goto eclipse application folder->/Applications/EclipsePHP.app/Contents/Eclipse/configuration/org.eclipse.osgi/.manager 删除.fileTable.3 .fileTable.4 .fileTableLock
configuration\org.eclipse.osgi\.manager\.fileTable.3 configuration\org.eclipse.osgi\.manager\.fileTable.2 configuration\org.eclipse.osgi\.manager\.fileTableLock configuration\org.eclipse.osgi\framework.info.2 //不删好像也能工作
删除后，重新打开eclipse，问题解决。